Category Archive Oracle 12cR2 New Features

ByJoel Pérez ( Oracle ACE Director )

Generate SSH Key Pairs to Access Oracle Linux instances in the Oracle Cloud Infrastructure..!!

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Generate SSH Key Pairs to Access Oracle Linux instances in the Oracle Cloud Infrastructure..!!

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Introduces Secure Shell key pair generation and demonstrates how to generate a SSH key pair to use when remotely connecting to Oracle Cloud Infrastructure instances.

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ByJoel Pérez ( Oracle ACE Director )

Can two Oracle sessions be blocked when accessing DIFFERENT rows.. ?..!! By  Connor McDonald @connor_mc_d

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Can two Oracle sessions be blocked when accessing DIFFERENT rows.. ?..!! 

By  Connor McDonald @connor_mc_d

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ByJoel Pérez ( Oracle ACE Director )

When Oracle MERGE gets MUNTED..!! By  Connor McDonald @connor_mc_d

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By  Connor McDonald @connor_mc_d

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MERGE is a great SQL command to capture both update and inserts in a single command. But how to diagnose and solve the problem when MERGE crashes with “ORA-30926: unable to get a stable set of rows in the source tables” And what the hell is a “stable set of rows” anyway ?

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ByJoel Pérez ( Oracle ACE Director )

Oracle Replication Done Right..!!

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Oracle Replication Done Right..!!

Larry Carpenter, guest author —

Whether it is a cloud, an on-premises, or a hybrid environment, the question asked most often is “What is the right solution to protect my data from failures – with the least amount of downtime and data loss?” Well, one choice that comes to mind is to replicate the data to another physical site. This means all the data changes are physically copied to a remote location using some application-agnostic replication technology. You can then activate the remote site in the event of a primary failure. So far so good. Which means “replication” is the solution which fits the bill. The default replication choice is to just replicate all the changes happening to the data at the storage level. Simple enough. Right?

Not really. For most common deployments using generic storage-based replication, the replication simply stops at the storage level. It never gets deeper. When the replication happens at the block level, the storage system has no clue about the type of data it is replicating. It just replicates whatever you throw at the storage, faithfully. There is both a good and a really bad aspect to this method. 

Peeling back some layers you will find that you opened a big can of worms. To start with, what if you accidentally delete a file? Guess what, that deletion gets replicated and the file is lost in the remote site too. What if there is a logical corruption on your production database? That too gets replicated faithfully. What if you want to offload your read-only analytical queries or reporting to the remote site while the replication is going on? Good luck with that, as mirrored copies of data are ‘dark’. The point is, while application agnostic storage replication seems to be easy, it just adds complexity when replicating databases that store your mission critical data. 

To look at it in another way, take the database server as an example. The IO changes in the memory usually traverse through various layers – from memory to HBA to a storage switch to a storage controller and finally to an actual disk. All pieces of the stack have their own firmware. A software bug or any issue with any component in the stack can result in data corruption – which the storage is not aware of and it does not care about either.  The corrupted data is replicated. I am not making this up, but there are real-world use cases.  See the following:

to continue reading the article, click the link down below:

https://blogs.oracle.com/maa/replication-done-right

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ByJoel Pérez ( Oracle ACE Director )

Oracle Flashback Database and Archived Redo..!! By  Connor McDonald @connor_mc_d

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Oracle Flashback Database and Archived Redo..!! By  Connor McDonald @connor_mc_d

By  Connor McDonald @connor_mc_d

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ByJoel Pérez ( Oracle ACE Director )

Oracle Resource Manager – Oracle Autonomous Data Warehouse..!! By Vivek Sharma

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Oracle Resource Manager – Oracle Autonomous Data Warehouse..!! By Vivek Sharma

I recently presented a Full Day Tech Event on Autonomous databases (ADB) for the North India Chapter of All India Oracle User Group. Since most of the attendees were Database Administrators, it was important to cover technical aspects of ADB. While Oracle doesn’t publicize the Internals of ADB, I spoke about some of my experiences based on many of POC’s.

Many DBA’s still assume that 18c Database is Autonomous? Therefore it is Important to know What is Autonomous Database and What it is not? First thing to note is that 18c is not Autonomous. 18c is just like any other Oracle Database. Autonomous uses the features of Oracle Database 18c, plus 12c, plus 11g, plus 10g and so on. Autonomous Database ensures that all these features work together. So, 18c is one of the Building Blocks of 18c. Autonomous uses all the features that Oracle Developed for almost 2 decades. The other important underlying technology is Oracle Exadata, which is the fastest Oracle Database Machine with redundancy built-in at each layer. Again, Oracle had been working on many features that makes this machine a powerful database machine, in terms of Performance, Reliability and Scalability. The Journey had been long from Smart Scans to Direct-to-wire protocol to Smart Fusion Block Transfer and the enhancements continue. One important thing to note is – Customers do have an option to move to 18c on Exadata within their own Data Centre. Then does it mean, this combination is Autonomous? The answer is NO. The two components are critical, but what makes it Autonomous is the Cloud Automation with Machine Learning.

During the session, I covered the Performance features and the way Oracle controls resource utilization. The topic that came up was Oracle Database Resource Managers. Database Administrators were more inquisitive to know more about this and how it is been implemented in ADB.

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Resource Manager – Autonomous Data Warehouse

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ByJoel Pérez ( Oracle ACE Director )

Oracle convert datatypes without downtime..!! By  Connor McDonald @connor_mc_d

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By  Connor McDonald @connor_mc_d

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You made a mistake in your database design? Do you need to change the datatype of a column without inflicting lengthy downtime for your users? It’s easier than you think.

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Step by Step Instructions for Detection, Diagnosis & Resolution of ORA-600 (ORA-00600 Internal error)..!!

Step by Step Instructions for Detection, Diagnosis & Resolution of ORA-600 (ORA-00600 Internal error)..!!

Hi Readers

As a DBA it is not uncommon to find ORA-00600 errors in your alert log.

Because there is no other context to the ORA-600 it can be difficult to know if it’s something you need to act on.

This post guides you through what the error means, how to use Oracle Trace File Analyzer (TFA) to detect it, how to diagnose the cause and then how to resolve.

Here’s what’s covered below:

To continue reading click here:

https://community.oracle.com/community/support/support-blogs/database-support-blog/blog/2018/09/19/ora-600-ora-00600-internal-error-detection-diagnosis-resolution

Thank you for giving your valuable time to read the above information.

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

My laptop can’t fly…. but Oracle 18cXE does!! By  Connor McDonald @connor_mc_d

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My laptop can’t fly…. but Oracle 18cXE does!! By  Connor McDonald @connor_mc_d

By  Connor McDonald @connor_mc_d

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Ways to avoid ORA-01555 snapshot too old error..!!

Ways to avoid ORA-01555 snapshot too old error..!!

Being the “Oracle DBA ” when the UNDO topic comes in an interview question. Normally interviewer as an about ORA-01555 snapshot too old error.   We reply about three or four lines as an answer For this question. For strong knowledge, we must have deep knowledge about this. Let’s have look on ORA-01555 snapshot too old error.

ORA-01555: snapshot too old: rollback segment number string with name “string” too small.

Cause: Rollback records needed by a reader for consistent read are overwritten by other writers.

Action: If in Automatic Undo Management mode, increase the setting of UNDO_RETENTION. Otherwise, use larger rollback segments.

The ORA-01555 snapshot too old error can be addressed by several remedies:-

  • Re-schedule long-running queries when the system has less DML load.
  • Increasing the size of your rollback segments(undo)size. The ORA-01555 snapshot too old also relates to your setting for automatically undo retention.
  • Don’t fetch between commits.

Ways to avoiding the ORA-01555 error are mention below:

  • Do not run discrete transactions while sensitive queries or transactions are running, unless you are confident that the data sets required are mutually exclusive.
  • Schedule long running queries and transactions out of hours, so that the consistent gets will not to rollback changes made since the snapshot SCN. This also reduces the work done by the server, and thus improves performance.
  • Code longrunning processes as a series of restartable steps.
  • Shrink all rollback segments back to their optimal size manually before running a sensitive query or transaction to reduce the risk of consistent get rollback failure due to extent reallocation.
  • Use a large optimal value on all rollback segments, to delay extent reuse.
  • Don’t fetch across commits,  that is, don’t fetch on a cursor that was opened prior to the last commit, particularly if the data queried by the cursor is being changed in the current session.
  • Use a large database block size to maximize the number of slots in the rollback segment transaction tables, and thus delay slot reuse.
  • Commit less often in tasks that will run at the same time as the sensitive query, particularly in PL/SQL procedures, to reduce transaction slot reuse.
  • If necessary, add extra rollback segments (undo logs) to make more transaction slotsavailable.

Thank you for giving your valuable time to read the above information.

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

8 ways of migrating your database to Oracle Cloud by Kamran Aghayev..!!

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8 ways of migrating your database to Oracle Cloud by Kamran Aghayev..!!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Oracle18c News.. I’ve got some good news… and some bad news..!! By  Connor McDonald @connor_mc_d

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Oracle18c News.. I’ve got some good news… and some bad news..!! By  Connor McDonald @connor_mc_d

By  Connor McDonald @connor_mc_d

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

10 Best Practices for Writing Oracle SQL..!!

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10 Best Practices for Writing Oracle SQL..!!

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10 Best Practices for Writing Oracle SQL

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

ONLINE table maintenance WITHOUT upgrading to 12c Release 2..!! By  Connor McDonald @connor_mc_d

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ONLINE table maintenance WITHOUT upgrading to 12c Release 2..!! By  Connor McDonald @connor_mc_d

By  Connor McDonald @connor_mc_d

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialized in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

18c Database creation on Windows..!! By  Connor McDonald @connor_mc_d

18c Database creation on Windows..!! By  Connor McDonald @connor_mc_d

By  Connor McDonald @connor_mc_d

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Large updates with minimal outages and minimal redo?..!! By  Connor McDonald @connor_mc_d

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Large updates with minimal outages and minimal redo?..!! By  Connor McDonald @connor_mc_d

By  Connor McDonald @connor_mc_d

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ByJoel Pérez ( Oracle ACE Director )

Migrating Oracle Databases from AWS to OCI!! By Oracle Learning Library

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Migrating Oracle Databases from AWS to OCI!! By Oracle Learning Library

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ByJoel Pérez ( Oracle ACE Director )

Online EVERYTHING in 12c Release 2 and 18c..!! By  Connor McDonald @connor_mc_d

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Online EVERYTHING in 12c Release 2 and 18c..!! By  Connor McDonald @connor_mc_d

By  Connor McDonald @connor_mc_d

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ByJoel Pérez ( Oracle ACE Director )

How does Autonomous Transaction Processing differ from the Autonomous Data Warehouse? By Maria Colgan..!!

How does Autonomous Transaction Processing differ from the Autonomous Data Warehouse? By Maria Colgan..!!

By Maria Colgan

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ByJoel Pérez ( Oracle ACE Director )

Supercharge TNS lookups..!! By Connor McDonald @connor_mc_d

Supercharge TNS lookups..!!

By  Connor McDonald @connor_mc_d

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ByJoel Pérez ( Oracle ACE Director )

Oracle ROWNUM – so simple yet so much confusion! By Connor McDonald @connor_mc_d

Oracle ROWNUM – so simple yet so much confusion!

By  Connor McDonald @connor_mc_d

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ByJoel Pérez ( Oracle ACE Director )

Create your Oracle 18c database with a few clicks!..!! By Connor McDonald @connor_mc_d

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Create your Oracle 18c database with a few clicks!..!!

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ByJoel Pérez ( Oracle ACE Director )

Oracle Small tables….Huge I/O cost?..!! By Connor McDonald @connor_mc_d

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Oracle Small tables….Huge I/O cost?..!!

By  Connor McDonald

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ByJoel Pérez ( Oracle ACE Director )

9 Upgrade and Migration Scenarios..!!

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9 Upgrade and Migration Scenarios..!!

By Mike Dietrich

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9 Upgrade and Migration Scenarios

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ByJoel Pérez ( Oracle ACE Director )

Connect as an Oracle database user WITHOUT knowing their password!..!!

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By  Connor McDonald

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Installation of Oracle Database 18.3.0 on premises / Linux..!!

Installation of Oracle Database 18.3.0 on premises / Linux..!!

By Mike Dietrich

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ByJoel Pérez ( Oracle ACE Director )

Oracle Database 18.3.0 on premises available for download on Linux..!!

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Oracle Database 18.3.0 on premises available for download on Linux..!!

By Mike Dietrich

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

The cool new “Unzip to target” mechanism for 18c software installation..!!

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The cool new “Unzip to target” mechanism for 18c software installation..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

How to bypass FORCE LOGGING..!!

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How to bypass FORCE LOGGING..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Difference between Docker and Virtual Machines ?..!!

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Difference between Docker and Virtual Machines ?..!!

By Aziz Zoaib

 
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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Applying the July 2018 Bundle Patch to Oracle Database 12.1.0.2..!!

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Applying the July 2018 Bundle Patch to Oracle Database 12.1.0.2..!!

By Mike Dietrich

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Fallback Strategy: Partial Offline Backup..!!

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Fallback Strategy: Partial Offline Backup..!!

By Mike Dietrich

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Fallback Strategy: Partial Offline Backup

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ByJoel Pérez ( Oracle ACE Director )

Run code as ANY schema..!!

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Run code as ANY schema..!!

By  Connor McDonald

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ByJoel Pérez ( Oracle ACE Director )

Oracle 18c : MEMOPTIMIZE_POOL_SIZE in SGA..!! By HariPrasath Rajaram

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Oracle 18c : MEMOPTIMIZE_POOL_SIZE in SGA..!!

By HariPrasath Rajaram

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Oracle 18c : MEMOPTIMIZE_POOL_SIZE in SGA

Oracle Database 18c: Introduction to Memoptimized RowStore (Memory of a Free Festival)

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ByJoel Pérez ( Oracle ACE Director )

The New Oracle Database Release and Patching Model..!! By Mike Dietrich

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The New Oracle Database Release and Patching Model..!!

By Mike Dietrich

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ByJoel Pérez ( Oracle ACE Director )

The truth of Chained rows & Migrated rows in Oracle Databases..!!

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The truth of Chained rows & Migrated rows in Oracle Databases..!!

By  Connor McDonald

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ByJoel Pérez ( Oracle ACE Director )

Long Identifiers in Oracle 12.2 may cause trouble..!!

Long Identifiers in Oracle 12.2 may cause trouble..!!

By Mike Dietrich

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Long Identifiers in Oracle 12.2 may cause trouble

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ByJoel Pérez ( Oracle ACE Director )

Truncate command in Oracle 12c..!!

By  Connor McDonald

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Truncate upgrade

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Oracle 18c XE will blow your mind..!!

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Oracle 18c XE will blow your mind..!!

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My laptop can’t fly.. but Oracle 18c XE does!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Troubleshooting a Complex Oracle Performance Issue..!!

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Troubleshooting a Complex Oracle Performance Issue..!!

By Tanel Poder

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Do I have to learn new tricks to manage Oracle database in the Cloud?..!!

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Do I have to learn new tricks to manage Oracle database in the Cloud?..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Migrating an Oracle Database to an Oracle Cloud Infrastructure Database Service Virtual Machine..!!

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Migrating an Oracle Database to an Oracle Cloud Infrastructure Database Service Virtual Machine..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Rock solid secure Oracle database connections..!!

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Rock solid secure Oracle database connections..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

_optimizer_ignore_hints is now optimizer_ignore_hints..!!

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_optimizer_ignore_hints is now optimizer_ignore_hints..!!

By Mike Dietrich

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_optimizer_ignore_hints is now optimizer_ignore_hints

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

How to Successfully Prepare for the Oracle Cloud Infrastructure 2018 Architect Associate Exam..!!

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How to Successfully Prepare for the Oracle Cloud Infrastructure 2018 Architect Associate Exam..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Patching Oracle Database 18.1.0 to 18.2.0 on premises..!!

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Patching Oracle Database 18.1.0 to 18.2.0 on premises..!!

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Patching Oracle Database 18.1.0 to 18.2.0 on premises

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

The death of UTL_FILE..!

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The death of UTL_FILE

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ByJoel Pérez ( Oracle ACE Director )

Upgrade Oracle 12.2.0.1 to Oracle Database 18c on-premises..!!

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Upgrade Oracle 12.2.0.1 to Oracle Database 18c on-premises..!!

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Upgrade Oracle 12.2.0.1 to Oracle Database 18c on-premises

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ByJoel Pérez ( Oracle ACE Director )

The simplest things….can be risky..!!

The simplest things….can be risky..!!

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The simplest things….can be risky

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ByJoel Pérez ( Oracle ACE Director )

Avoiding reparsing SQL queries due to partition level DDLs – Part 2..!!

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Avoiding reparsing SQL queries due to partition level DDLs – Part 2..!!

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Avoiding reparsing SQL queries due to partition level DDLs – Part 2

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ByJoel Pérez ( Oracle ACE Director )

Create an Oracle Big Data Cloud Cluster In Oracle Cloud Infrastructure Classic..!!

Create an Oracle Big Data Cloud Cluster In Oracle Cloud Infrastructure Classic..!!

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ByJoel Pérez ( Oracle ACE Director )

Oracle Database Patching — Tips and Tricks..!!

Oracle Database Patching — Tips and Tricks..!!

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http://www.oraworld.org/fileadmin/documents/9-2018_ORAWORLD.pdf

 

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ByJoel Pérez ( Oracle ACE Director )

How System Statistics Affect SQL Execution Plans..!!

How System Statistics Affect SQL Execution Plans..!!

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https://blogs.oracle.com/optimizer/should-you-gather-system-statistics

 

Should you gather System Statistics?

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ByJoel Pérez ( Oracle ACE Director )

Avoiding reparsing SQL queries due to partition level DDLs – Part 1..!!

Avoiding reparsing SQL queries due to partition level DDLs – Part 1..!!

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Avoiding reparsing SQL queries due to partition level DDLs – Part 1

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ByJoel Pérez ( Oracle ACE Director )

Drop a tablespace in a PDB with a Guaranteed Restore Point being active..!!

Drop a tablespace in a PDB with a Guaranteed Restore Point being active..!!

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Drop a tablespace in a PDB with a Guaranteed Restore Point being active

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Key points to become Expert in SQL Tuning..!!

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Key points to become Expert in SQL Tuning..!!

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ByJoel Pérez ( Oracle ACE Director )

How To Improve SQL Statements Performance: Using SQL Plan Baselines..!!

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How To Improve SQL Statements Performance: Using SQL Plan Baselines..!!

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How To Improve SQL Statements Performance: Using SQL Plan Baselines

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Focus on Hash Joins – Join Groups..!!

Focus on Hash Joins – Join Groups..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Why are Column Store scans faster than Row Store scans?..!!

Why are Column Store scans faster than Row Store scans?..!!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

RMAN backup generates traces in Oracle 12.2.0.1..!!

RMAN backup generates traces in Oracle 12.2.0.1..!!

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RMAN backup generates traces in Oracle 12.2.0.1

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Finding SQL with Performance changing over time..!!

Finding SQL with Performance changing over time..!!

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Finding SQL with Performance changing over time

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Script to identify index rebuild candidates on 12c..!!

Script to identify index rebuild candidates on 12c..!!

Hi Readers

To read click here:

Script to identify index rebuild candidates on 12c

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Playing with ADWC (Autonomous Data Warehouse Cloud Service)..!!

Playing with ADWC (Autonomous Data Warehouse Cloud Service)..!!

Hi Readers

To read click here:

Playing with ADWC (Autonomous Data Warehouse Cloud Service)

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Top 10 performance tuning tips for relational databases..!!

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Top 10 performance tuning tips for relational databases..!!

Hi Readers

To read click here:

http://web.synametrics.com/top10performancetips.htm

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Why should you use the most recent version of OPatch?..!!

Why should you use the most recent version of OPatch?..!!

Hi Readers

To read click here:

Why should you use the most recent version of OPatch?

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Be aware of database options selections for PDBs in DBCA..!!

Be aware of database options selections for PDBs in DBCA..!!

Hi Readers

To read click here:

Be aware of database options selections for PDBs in DBCA

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

The most horrific Oracle messages you might get in a production database..!!

The most horrific Oracle messages you might get in a production database..!!

Hi Readers

To read click here:

The most horrific Oracle messages you might get in the production database – or – why DBAs get older

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Oracle 18c Non-CDB Databases In The Oracle Database Cloud Service (ODBCS)..!!

Oracle 18c Non-CDB Databases In The Oracle Database Cloud Service (ODBCS)..!!

Hi Readers

To read this article click here:

Oracle 18c Non-CDB Databases in the Oracle Database Cloud Service (ODBCS)

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Oracle 18c Security utl_file_dir and schema no authentication..!!

Oracle 18c Security utl_file_dir and schema no authentication..!!

Hi Readers

To read click here:

http://www.petefinnigan.com/weblog/archives/00001435.htm

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Different block sizes when you plugin?..!!

Different block sizes when you plugin?..!!

Hi Readers

To read Click Here:

Different block sizes when you plugin?

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

How to Become OCM12c..!! ( Oracle Certified Master 12c )

How to Become OCM12c..!! ( Oracle Certified Master 12c )

Hi Readers

My general Advices:

1.- If you are already OCM11g , the upgrade will be so easy.. just learn the new features.. Multitenant.. etc you do not have to learn too much new content.. almost the same content of 11g, check the points to be evaluated

2.- If you want to become OCM12c you can study with this book ( I’m official Reviewer of that great book! )

The best book ever for the OCM11g preparation..!!

and you will cover around 80% of the exam.. just must study the new 20% with other materials ( Oracle University Courses.. books.. online training.. etc )

3.- Become very expert in all related to Multitenant and pluggable databases.. that’s the main feature to be evaluated

4.- Tip: At the exam the documentation is not searchable.. but just learn the books where is the information you want.. open the webpage related to that book, expand all the topics with the “expand all” option inside the documentation and use the “search” of the browser and voooila.. you can get points very fast..!!

Whatever another question you have you can contact me in the chat of Linkedin.

Thanks!!

Additional reading:

OCM 12C Journey

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Oracle Cloud (DBaaS): How to become OCP & OCM Cloud..!!

Oracle Cloud (DBaaS): How to become OCP & OCM Cloud..!!

Hi Readers

To read click here:

https://community.oracle.com/blogs/Sir.DBaaSJoelPerez/2017/09/08/oracle-cloud-dbaas-how-to-become-ocp-ocm-cloud

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

41 SQL Experts Reveal Their Top 3 Tools for SQL Development and Administration..!!

41 SQL Experts Reveal Their Top 3 Tools for SQL Development and Administration..!!

Hi Readers

To red this article, click here:

41 SQL Experts Reveal Their Top 3 Tools for SQL Development and Administration

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

 

ByJoel Pérez ( Oracle ACE Director )

ADWC: Creation of Autonomous Database Cloud service..!!

ADWC: Creation of Autonomous Database Cloud service..!!

Hi Readers

To Read click here:

https://blog.dbi-services.com/adwc-creation-of-autonomous-database-cloud-service/

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

Follow our Company in Linkedin: https://www.linkedin.com/company/1856106/

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

 

ByJoel Pérez ( Oracle ACE Director )

How to pass Oracle Database 12c: RAC and Grid Infr. Adm. exam – 1Z0-068..!!

How to pass Oracle Database 12c: RAC and Grid Infr. Adm. exam – 1Z0-068..!!

Hi Readers

To read click here:

How to pass Oracle Database 12c: RAC and Grid Infrastructure Administration exam – 1Z0-068 and become Oracle Certified Expert

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Deploy and Manage Pluggable Databases in the Oracle Public Cloud..!!

Deploy and Manage Pluggable Databases in the Oracle Public Cloud..!!

Hi Readers

To read this great article click here:

https://blogs.oracle.com/oracleuniversity/deploy-and-manage-pluggable-databases-in-the-oracle-public-cloud?sc=WWOUSOCIALBLG050218

We hope the content could be useful for your Oracle DBA Tasks!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

32 Tips for Oracle SQL Query Writing and Performance Tuning..!!

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32 Tips for Oracle SQL Query Writing and Performance Tuning..!!

Hi readers

To read this great article, click here:

32 Tips for Oracle SQL Query Writing and Performance Tuning

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

GET FREE COPY OF THE OCM11G study guide book..!!

GET FREE COPY OF THE OCM11G study guide book..!!

Hi Readers

To get a free copy go to this link and follow the instructions

ORACLE 11G CERTIFICATION GUIDE BOOK SUMMARY

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Sharding Database Infrastructure Horizontally – Part III [Testing Oracle Sharding]..!!

Sharding Database Infrastructure Horizontally – Part III [Testing Oracle Sharding]..!!

By Nassyam Basha

Hi Readers

To read Click here:

http://select.ioug.org/blog/sharding-database-infrastructure-horizontally—sharding-oracle-part-iii-[testing-oracle-sharding]

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Patching to Oracle 18.2.0 in the Oracle Cloud (OCI Classic)..!!

Patching to Oracle 18.2.0 in the Oracle Cloud (OCI Classic)..!!

By Mike Dietrich

Hi Readers

To read this great article, click here:

Patching to Oracle 18.2.0 in the Oracle Cloud (OCI Classic)

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Securing the Oracle Database eBook (Free)- Second Edition Now Available..!!

Hi Readers

Securing the Oracle Database eBook – Second Edition Now Available..!!

Do not miss it.. Click here:

https://blogs.oracle.com/database/securing-the-oracle-database-ebook-second-edition-now-available

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

The best book ever for the OCM11g preparation..!!

The best book ever for the OCM11g preparation..!!

Hi Readers

The OCM award is the highest credential in the Oracle Certified Program, culturally for people that works as Oracle DBA could be one of their dreams or professional achievement. Personally when I was getting ready for this event 4 years ago, it was quite difficult to find good and accurate materials that could summary all the knowledge for this exam. Finally between millions of technical writers.. someone got the encourage to write the best preparation book ever for this exam. I had the honor to be one of the official reviewers. I recommend this book at 100% without hesitation. Basically for less than 70usd you can get a book that took 2.5 years to be written and years and years of real experience of his great writer Kamran Agayev A. (OCM, ACE Director)

Well if you want to be one of the honor owners of this book, just click here and follow the flow..

https://www.amazon.com/Oracle-Certified-Master-Study-Guide/dp/1536800791

You want GET A FREE COPY OF THIS BOOK?

Click here:

ORACLE 11G CERTIFICATION GUIDE BOOK SUMMARY

Additionally you can enjoy this great article written by my colleague Skant Gupta

Tip and Tricks to pass OCM exam

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

New Oracle VM Templates for Oracle Database available..!!

New Oracle VM Templates for Oracle Database available..!!

Hi Readers

To read this article click here:

https://blogs.oracle.com/virtualization/new-oracle-vm-templates-for-oracle-database-available

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

How to Generate a Useful SQL Execution Plan..!!

How to Generate a Useful SQL Execution Plan..!!

Hi Readers

To read this great article, click here:

https://blogs.oracle.com/optimizer/how-to-generate-a-useful-sql-execution-plan

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Cloud, the inevitable next step in the DBA DNA evolution..!!

Cloud, the inevitable next step in the DBA DNA evolution..!!

By Francisco Alvarez ( Oracle ACE Director )

Hi Readers

To read this article click here:

https://blogs.oracle.com/database/the-forgotten-link-to-the-cloud

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

How will DBA employment change by 2026?..!!

Subscribe to get the notifications of our daily articles in your email..!

How will DBA employment change by 2026?..!!

Hi Readers

To read this interesting article, click here:

https://blogs.oracle.com/oracleuniversity/5-things-to-expect-from-modern-dba-roles

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Do you have to execute “datapatch” when you create a new database?

Do you have to execute “datapatch” when you create a new database?

By Mike Dietrich

Hi Readers

To read Click here:

Do you have to execute “datapatch” when you create a new database?

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

Follow our Company in Linkedin: https://www.linkedin.com/company/1856106/

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

18.2 patch… painless for me..!!

18.2 patch… painless for me..!!

Hi Readers

To read this great article, Click here:

18.2 patch… painless for me

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

Follow our Company in Linkedin: https://www.linkedin.com/company/1856106/

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Do You Have What It Takes to be a DBA of the Future?

Do You Have What It Takes to be a DBA of the Future?

Hi Readers

You can recover a database – great. You can tune SQL – sweet! You even know how to write some PL/SQL when push comes to shove – watch out Developers!!! The aforementioned are great skills to have – if it was the year 2010. But the DBA’s of today need to be able to assimilate to the tools and technologies of the future. In this article will be discussed (at a high-level) many items that will help you grow not only your expertise, but also support your long-term career goals.

To read click here:

http://select.ioug.org/p/bl/et/blogid=6&blogaid=900

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

Follow our Company in Linkedin: https://www.linkedin.com/company/1856106/

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

 

ByJoel Pérez ( Oracle ACE Director )

Choosing the Right database table Compression..!!

Choosing the Right database table Compression..!!

Hi Readers

Choosing the right database table compression matters.  It affects the size of the objects and also the performance of your application. If you want to read a short but good article about it, Click here:

http://blog.go-faster.co.uk/2018/04/choosing-right-compression.html

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

New in 18c: In-Memory Optimized Number Format Speeds Up Arithmetic Operations..!!

New in 18c: In-Memory Optimized Number Format Speeds Up Arithmetic Operations..!!

Hi Readers

To read thick article Click Here:

https://blogs.oracle.com/in-memory/new-in-18c%3a-in-memory-optimized-number-format-speeds-up-arithmetic-operations

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Building Docker on Oracle Developer Cloud Service..!!

Building Docker on Oracle Developer Cloud Service..!!

Hi Readers

To read this great article, click here:

https://blogs.oracle.com/developers/building-docker-on-oracle-developer-cloud-service

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

18.1 – New Formatting Option, Right-Align Query Keywords..!!

18.1 – New Formatting Option, Right-Align Query Keywords..!!

Hi Readers

Click here to read:

18.1 – New Formatting Option, Right-Align Query Keywords

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

When will Non-multitenant databases be desupported..?? you have to move to multitenant or not.. ??

When will Non-multitenant databases be desupported..?? you have to move to multitenant or not.. ??

by Connor McDonald 

Hi Readers

For getting these answers, watch this video:

We hope the content could be useful for your Oracle DBA Tasks!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Oracle Cloud: Hybrid Disaster Recovery Deployment ( Data Guard )..!!

Oracle Cloud: Hybrid Disaster Recovery Deployment ( Data Guard )..!!

By Francisco Alvarez ( Oracle ACE Director )

Hi Readers

For reading this great article click here:

Playing with Oracle Cloud – Creating a Hybrid DR Deployment

We hope the content could be useful for your Oracle DBA Tasks!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

18.1 is Now Available – Easier Connections..!!

18.1 is Now Available – Easier Connections..!!

Hi Readers

For Reading Click Here:

18.1 is Now Available – Easier Connections!

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Purging of PDB_PLUG_IN_VIOLATIONS in Oracle 18c..!!

Purging of PDB_PLUG_IN_VIOLATIONS in Oracle 18c..!!

By Mike Dietrich

Hi Readers

For Reading Click here:

Purging of PDB_PLUG_IN_VIOLATIONS in Oracle 18c

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Enterprise Manager DB Express for Oracle 18c database ( Release 18.0.0.0.0 )..!!

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Enterprise Manager DB Express for 18c database ( Release 18.0.0.0.0 )..!!

Hi Readers

SSH into your DB System node, and open a tunnel for the port we will use on the Enterprise Manager DB Express 18c.

ssh -i <SSH_PRIVATE_KEY> -C -L 5505:localhost:5505 opc@<PUBLIC_IP>

Login as Oracle user.

$sudo su – oracle

 

Set the environment variables for your Database system.

$ . oraenv

ORACLE_SID = [oracle] ? <DATABASE_NAME>

The Oracle base has been set to /u01/app/oracle

 

Connect to your Container database as SYSDBA.

$ sqlplus / as sysdba

SQL*Plus: Release 18.0.0.0.0 Production on Fri Mar 23 16:59:49 2018

Version 18.1.0.0.0

Copyright (c) 1982, 2017, Oracle.  All rights reserved.

Connected to:

Oracle Database 18c EE High Perf Release 18.0.0.0.0 – Production

Version 18.1.0.0.0

 

Run the following commands and procedures.

SQL> alter user xdb account unlock;

SQL> exec dbms_xdb_config.SetHttpPort(5505);

PL/SQL procedure successfully completed.

SQL> exec dbms_xdb_config.SetGlobalPortEnabled(TRUE);

PL/SQL procedure successfully completed.

 

Use your browser on your local computer to open the console at http://localhost:5505/em.

Enjoy!

 

We hope the content could be useful for your Oracle DBA Tasks!

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Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Unplug a 12.2.0.1 PDB and plugin into 18c in the Cloud..!!

Unplug a 12.2.0.1 PDB and plugin into 18c in the Cloud..!!

By Mike Dietrich

Hi Readers

For Reading this great article click here:

Unplug a 12.2.0.1 PDB and plugin into 18c in the Cloud

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

 

ByJoel Pérez ( Oracle ACE Director )

Migrating to Cloud database using an Oracle Cloud Backup..!!

Migrating to Cloud database using an Oracle Cloud Backup..!!

By Francisco Alvarez ( Oracle ACE Director )

For Reading the article Click here:

Playing with Oracle Database Cloud – Migrating to Cloud using an Oracle Cloud Backup

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

In Oracle 18c DBAs must understand the difference between “Autonomy vs Automation”..!!

In Oracle 18c DBAs must understand the difference between “Autonomy vs Automation”..!! By Paul Toal

Hi Readers

At OpenWorld 2017 last year (it still seems strange saying last year), Oracle announced“The world’s first Autonomous Database”. The marketing literature states:

 “Oracle Autonomous Database Cloud eliminates complexity, human error, and manual management, helping to ensure higher reliability, security, and more operational efficiency at the lowest cost.”

When I first heard about the autonomous database, I didn’t quite get it. I’m no database expert but I thought that we had database management well in hand. I know DBAs with decades of experience who can manage databases with their eyes shut, usually using lots of scripts and automation.

So, what’s different about the new Oracle Autonomous Database? The penny dropped for me when I realised the differencet between automation and autonomy. A common misunderstanding is that Oracle has just automated the database. That is not the case.

Automation refers to a set of sequential steps that are executed in order, usually using a script. Think of an unattended installer. You give it the settings and it executes a number of predefined steps to install your piece of software with the settings you define. Another example might be a DBA who has written a script to automate the patching of a server. The script will run through a series of steps, such as, connect to the server, upload the patch, execute the patch, verify the patch, then, restart the server. Both of these are examples of automation, not autonomy.  

When Oracle talks about the Autonomous Database, they aren’t saying that they have just written a number of scripts to automate several steps, they are talking about autonomy, i.e. self-management.

What this means is that, as the administrator, you will define the parameters within which the database must operate and the database will take care of that for you. For example, you will define the service level you need, or the information retention policy you must enforce. Then, the database will do the rest, under the covers to meet that requirement. No more setting up RAC or DataGuard to configure HA and DR.   

From a security perspective, the Autonomous Database also reduces the risks associated with manually managed databases. Yes, we have some very clever and experienced DBAs with mature scripts, but, in today’s world of increasing cyberattacks and more data breaches than ever before, against larger and more sensitive data, we need to remove as much of the manual processes associated with security as possible. There will, of course, always be a need for some manual intervention, but the security posture in any organisation, and the response to any threat needs to be more rapid than waiting for an overworked DBA or SOC Analyst to get around to dealing with it.

For example, the Autonomous Database will patch itself regularly with the latest patches and always enable encryption, so you don’t inadvertently leave data stored in the clear.

At the moment, industry is losing the cat and mouse game against the cyber criminals. Looking beyond databases, I can see lots of other places where autonomy, underpinned by capabilities such as machine learning, will play a crucial role in the cyber war in the near future.  There is a long way to go, but it’s an exciting time at Oracle, seeing the emergence of technologies such as the Autonomous Database, as well as our newly designed Identity SOC, really looking at how they address this changing threat landscape using the latest and greatest innovations.

2018 is going to be an exciting year.

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

Click here to read the article

 

ByJoel Pérez ( Oracle ACE Director )

Oracle 18c: Introduction to In-Memory External Tables in 18c..!!

Oracle 18c: Introduction to In-Memory External Tables in 18c..!!

Hi Readers

Enjoy Reading: Click here to read the article

Additional Material: Oracle Database In-Memory with Oracle Database 18c Technical Overview

http://www.oracle.com/technetwork/database/in-memory/overview/twp-oracle-database-in-memory-2245633.pdf

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

18c Private Temporary Tables – Why ..?

18c Private Temporary Tables – Why ..?

Hi Readers

Enjoy watching:

We hope the content could be useful for your Oracle DBA Tasks!

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Step by Step Oracle Database Cloud Backup Service..!!

Step by Step Oracle Database Cloud Backup Service..!!

By Francisco Alvarez ( Oracle ACE Director )

For Reading the article Click here:

Playing with Oracle Database Cloud Backup Service

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Display the sql_id for a query in Oracle 18c..!!

Display the sql_id for a query in Oracle 18c..!!

Hi Readers

Click the link down below to read:

Display the sql_id for a query in Oracle 18c

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

SET LINESIZE window in Oracle 18c..!!

SET LINESIZE window in Oracle 18c..!!

Hi Readers

SET LINESIZE is a very common command in SQL*Plus, let’s see how to do it in Oracle 18c

SET LINESIZE window in Oracle 18c

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Oracle Sharding Overview.. Video..!!

Oracle Sharding Overview.. Video..!!

Hi guys 

Enjoy this great video to know the key points about Oracle Sharding!

Additional Material:

Sharding Database Infrastructure Horizontally – Sharding in Oracle 12.2 – Part 1

Sharding Database Infrastructure Horizontally – Sharding in Oracle 12.2 – Part 2

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Oracle autonomous database is really autonomous.. you do not have full DBA control..!!

Oracle autonomous database is really autonomous.. you do not have full DBA control..!!

Hi readers 

In a big conversation I had many months ago with Andrew Holdsworth ( Vice President of Real World Performance at Oracle Corp. ) he clarified me how autonomous works inside.. it’s very simple.. no indexes.. no any complex objects to speed up.. just the everything rely on the huge power of exadata.. + artificial intelligence, machine learning, and blockchain technology into its cloud-based services.

Exadata reads huge quantity of data so fast..

Exadata writes data so fast..

Exadata communication is so fast.. the disks are so fast..

So.. the autonomous concept is very simple.. use the HUGE POWER of exadata to process in a plain mode.. + ( advanced techniques of artificial intelligence, machine learning, and blockchain technology )  and you will have great predictable results.. simple like that.. that’s why in autonomous you can not create indexes or any other structure that affects a kind plain processing mode..

that;s why in autonomous.. you do not manage the database parameters.. etc.. it’s just to use the big BULL to drag the load.. simple like that..

See vestiges of that concept in this article. Click the image or the link down below.

To read Click here:

DBA Internals of the Oracle Autonomous Database

For additional reading, click down below:

First Impressions of Oracle Autonomous Data Warehouse Cloud..!!

Additionally you can take a look to this video:

Oracle revolutionizes cloud storage with AI, Machine Learning

http://www.techbeat.ph/oracle-revolutionizes-cloud-storage-ai-machine-learning/

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Suggestion and Solution to SCN Compatibility and DB Link Interconnection Issue

1. Background

 

All current Oracle databases have an upper limit on the SCN according to Oracle’s kernel design, the upper limit is the second’s difference between the current time and 1988/01/01 then times 16k.

For some specified high version database (11.1.0.7.20, 11.2.0.3.9, 11.2.0.4.*, 12.1.0.2 and above), the current value of this limit is calculated by the algorithm whose main factor is SCN COMPATIBILITY. Through this parameter,the value of SCN won’t exceed the upper limit, and DB Link between databases works well.

However, the SCN COMPATIBILITY of these high version database will be adjusted from 1 to 3 after June 23, 2019, meaning the maximum growth rate will reach 96k, which may result in the situation that the upper limit of high-version DB is much higher than the low-version databases.so when that happens, Low version database cannot connect with high version through DB Link.

Then what do we do?

2. Which are high version DB and which are not?

Basically, the exact version of DB and PSU information can help you to distinguish these two kinds of Database.The high-version database includes the following:

All 12.1.0.2 and above databases, including Oracle 18c
11.2.0.4 databases which contain all PSUs
11.2.0.3 databases, with whose PSU at least to 11.2.0.3.9
11.1.0.7 databases, with whose PSU at least to 11.1.0.7.20

all the other versions are lower versions, including:

Oracle 11.1.0.6 and previous versionsincluding Oracle 10g.
Oracle 11.1.0.7, with whose PSU less than 11.1.0.7.20
Oracle 11.2.0.1/11.2.0.2
Oracle 11.2.0.3, with whose PSU less than 11.2.0.3.9

If the accurate PSU is known, you can also check the DBMS_SCN package. For in the highversion,Oracle introduces the features of SCN Compatibility, and which is managed by DBMS_SCN package, so if DBMS_SCN package exists, the database is high version.

use the following SQL to find out:

Select count(*) from dba_objects

Where

owner = ‘SYS’ and object_name =’DBMS_SCN’ and object_type=’PACKAGE BODY’;

COUNT(*)

———-

1

If the SQL return 1, it proves the DB is a high version, otherwise a low version. For a higher version database, the current SCN Compatibility information can be obtained by calling DBMS_SCN with the following code.

Set serverout on

declare

v_autorollover_date date;

v_target_compat number;

v_RSL number;

v_hr_in_scn number;

v_hr_in_sec number;

v_t4 number;

v_max_cmpat number;

v_isenabled boolean;

v_current_compat number;

begin

dbms_scn.GETCURRENTSCNPARAMS(

​​v_RSL,v_hr_in_scn,v_hr_in_sec,v_current_compat,v_max_cmpat);

dbms_scn.GETSCNAUTOROLLOVERPARAMS(

​​v_autorollover_date,v_target_compat,v_isenabled);

dbms_output.put_line(‘Current SCN compatibility:’||v_current_compat);

dbms_output.put_line(‘Current SCN RATE:’||round((v_hr_in_scn/v_hr_in_sec)/1024)||’k’);

if(v_isenabled) then

dbms_output.put_line(‘AUTO SCN compatibility rollover is ENABLED!!!’);

dbms_output.put_line(‘AUTO rollover time:’||to_char(v_date,’YYYY/MM/DD’));

dbms_output.put_line(‘AUTO rollover target value:’||v_target_compat );

else

dbms_output.put_line(‘AUTO SCN compatibility rollover is DISABLED!!!’);

end if;

end;

/

If no changes have been made, then the Current SCN compatibility is 1 and AUTO rollover is enabled, the time is 2019, 06/23, and the target is 3.

For older databases, we can assume the SCN compatibility is 1.

3. Potential risk analysis

According to the upper limit algorithm of Oracle’s SCN, the upper limit of 16k speed and 96k speed is obviously different.

If some of the databases automatically change SCN Compatibility to 3 on 2019/06/23, then the SCN limit of these databases will become 3.5E13 or higher soon, and those have not changed will stay between 1.8E13 and 2E13 for 10 years.

Imagine this: the SCN Compatibility = 3 in one database, and SCN abnormal increase due to certain reasons (bugs, manual settings, etc.), and the value exceeds the SCN ceiling with whose rate is 16k if DB Link communication between two data is required, the mutual SCN will equivalent to the higher one, and then value exceeds the upper limit, DB Link communication will fail.

To sum up, the SCN issue usually doesn’t occur unless all the following factors are met:

A. The SCN Compatibility between the two databases is inconsistent.

B. Abnormal growth happens in the Database with high SCN compatibility, and exceeds the upper limit value of databases with low SCN Compatibility

C. These two kinds of databases connected through the DBLink.

4. Suggestion and solution

To avoid the above problem, the most thorough approach is to unify the SCN Compatibility. There are four situations:

If the databases are all high-version databases, nothing need to be done.
If the database is mainly a high version and a few low- version databases, then it is highly recommended to upgrade the low-version database to a higher version.
If the databases are all lower versions, there is no rush to upgrade the databases right away. But the issue of adding new versions database in the future should be concerned.
If the databases is mainly a low version, and it is inconvenient to upgrade; or a high version is main, yetlow version databases cannot be upgraded, then it is recommended to set SCN Compatibility=1 for all databases, and close the Auto Rollover function of high version to avoid automatically changing of SCN Compatibility.
 

5. Method by adjusting Auto Rollover and SCN Compatibility

1、If you decide to keep the overall environment in the SCN Compatibility=1 after 2019/06/23, you need to disable the SCN Compatibility AutoRollover function of the new version of the database before 2019/06/23.

Note: the following actions are risky and it is not recommended to do it by yourself.
Begin

DBMS_SCN.DISABLEAUTOROLLOVER;

end;

/

The following information will appear in the Alert log

Fri Mar 16 17:15:15 2018

Database SCN compatibility auto-rollover disaedbl

You can also check this by running the script of the second chapter, the expected output is:

AUTO SCN compatibility rollover is DISABLED!!!

2If you decide to keep the entire environment in the SCN compatibility=1 state, then you also need to pay attention to the database added after 2019/06/23, it needs to be manually changed to SCN compatibility=1 to alter the default value, this operation needs to be performed in the Mount state, as follows.

 

Begin

DBMS_SCN.DISABLEAUTOROLLOVER;

end;

/

shutdown immediate

startup mount

alter database set SCN COMPATIBILITY 1;

 

The following information will appear in the Alert log

Completed: alter database set scn compatibility 1

6. Reference

Oracle Support document:

Oracle Databases Need to be Patched to a Minimum Patchset/PSU/RU level before April 2019 (Doc ID 2361478.1)

Mandatory Patching Requirement for Database Versions 11.2.0.3 or Earlier, Using DB Links (Doc ID 2335265.1)

 

The article finishes here!

We hope the content could be useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Subscribe to our Blog and enjoy our Weekly Cloud article..!

Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

Oracle Database 18c = Oracle Database 12c Release 2 12.2.0.2 ??

Oracle Database 18c = Oracle Database 12c Release 2 12.2.0.2 ??

By Maria Colgan

Hi Readers

Oracle Database 18c = Oracle Database 12c Release 2 12.2.0.2 ??

The answer is yes.. the name has simply been changed to reflect the year in which the product is released. Most probable you are so eager to start to read about the new features with the official documentation and more.. so.. read this short and great article of Maria Colgan to get the starting links and more.. 

Today Oracle officially released Oracle Database 18c on the Oracle Public Cloud and Oracle Engineered Systems. This is the first version of the database to follow the new yearly release model and you can find more details on the release model change in the Oracle Support Document 2285040.1 .

Before you freak out about the fact you haven’t even upgraded 12.2, so how on earth are you ever going to get to 18c – Don’t Panic!

Oracle Database 18c is in fact “Oracle Database 12c Release 2 12.2.0.2”, the name has simply been changed to reflect the year in which the product is released.

So, what can you expect?

As you’d imagine a patchset doesn’t contain any seismic changes in functionality but there are lots of small but extremely useful incremental improvements, most of which focus on the three key marquee features in Oracle Database 12c Release2:

More details on what has changed in each of these areas and other improvements can be found in the Oracle Database blog post published by Dominic Giles this morning or in the video below with Penny Avril.

You can also read all about the new features in the 18c documentation and you can try out Oracle Database 18c on LiveSQL.

So, when will you be able to get your hands on 18c on-premises for non-engineered systems?

It will be some time later this calendar year. You can check the Oracle Support document 742060.1 for more details!

We hope the content could useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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Post Author Bios:

Joel Pérez is an Expert DBA ( Oracle ACE Director, Maximum Availability OCM, OCM Cloud Admin. & OCM12c/11g ) with over 17 years of Real World Experience in Oracle Technology, specialised in design and implement solutions of: High Availability, Disaster Recovery, Upgrades, Replication, Cloud and all area related to Oracle Databases. International consultant with duties, conferences & activities in more than 50 countries and countless clients around the world. Habitual and one of leading writers of Technical Oracle articles for: OTN Spanish, Portuguese, English and more. Regular Speaker in worldwide Oracle events like: OTN LAD (Latin America), OTN MENA (Middle East & Africa), OTN APAC ( Asian Pacific), DTCC China, Oracle Code.. . Joel has always been known for being a pioneer in Oracle technology since the early days of his career being the first Latin American awarded as “OTN Expert” at year 2003 by Oracle Corp., one of the first “Oracle ACE” globally in the Oracle ACE Program at year 2004. He was honoured as one of the first “OCM Database Cloud Administrator” & Maximum Availability OCM in the world. Currently Joel works as Senior Cloud Database Architect in “Yunhe Enmo (Beijing) Technology Co.,Ltd”., company located in Beijing, China En.enmotech.com

Joel Pérez’s Linkedin Profile: https://www.linkedin.com/in/sirdbaasjoelperez/

ByJoel Pérez ( Oracle ACE Director )

12 Things You Need to Know about Oracle Database 12c R2

12 Things You Need to Know about Oracle Database 12c R2

Hi Readers

At these times we are talking already about Oracle18c, however most of production systems are in 11g,, 12cR1.. 12cR2.. so.. We think you will love this material.

Enjoy Connor McDonald Talking about Oracle Database 12c R2

https://go.oracle.com/LP=60882?elqCampaignId=92113https://go.oracle.com/LP=60882?elqCampaignId=92113&src1=:ow:lp:sh:em::LPD100664923NLP3&intcmp=OUNV170405P00034:ow:lp:sh:em::LPD100664923NLP3

Ask Tom Answer Team (Connor McDonald and Chris Saxon) on Oracle Database 12c Release 2 New Features

12 things about 12c Release 2 with Connor McDonald

We hope the content could useful for your Oracle DBA Tasks!

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ByJoel Pérez ( Oracle ACE Director )

Oracle 12cR2: Cross-Platform PDB Transport Using XTTS..!!

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Oracle 12cR2: Cross-Platform PDB Transport Using XTTS..!!

Hi Readers

Let’s see how we can perform this process:

  1. Verify the prerequisites: The source PDB must be closed in MOUNTED mode and the COMPATIBLE parameter must be set to 12.2 or higher.

  2. Start an RMAN session and connect to the CDB instance of the PDB to be transported.

  3. For performing cross-platform PDB transport, you may need the exact name of the destination platform to which you are transporting data and may need to verify that the destination platform is of the same endian format.

    SQL> SELECT PLATFORM_ID, PLATFORM_NAME, ENDIAN_FORMAT FROM V$TRANSPORTABLE_PLATFORM
    WHERE UPPER(PLATFORM_NAME) LIKE ‘%LINUX%’;

  4. Back up the source PDB by using the BACKUP command with TO PLATFORM or FOR TRANSPORT. The new UNPLUG INTO clause creates the XML file containing the metadata of the PDB—tablespaces list, datafiles list, options, and parameters values. The FORMAT clause indicates the directory where the backup sets containing the data required for cross-platform database transportation are stored on the source host.

    In the first example in the slide, the conversion will take place on the source host and the files stored in the /bkp_dir directory are converted for the Linux x86 64-bit platform. In the second example, the conversion will take place on the destination host during the restore command and the files stored in /bkp_dir directory on the source host are not converted yet.

  1. Disconnect from the source CDB.

  2. Move the backup sets and the XML file created by the BACKUP command to the

    destination host. You can use operating system utilities to move the backup sets and the XML file from the source host to the destination host.

  3. Connect to the destination CDB, to which the PDB must be transported. Ensure that the destination CDB is opened.

  4. Use the RESTORE command to restore the files for the newly created PDB to the target location, and plug the files into the new PDB by using the new USING clause.

We hope the content could useful for your Oracle DBA Tasks!

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ByJoel Pérez ( Oracle ACE Director )

Oracle 12cR2: Cross-Platform Transportable PDB

Oracle 12cR2: Cross-Platform Transportable PDB

Hi Readers

Oracle Database 12.1 allows you to transport database or tablespace backup sets with conversion at source or destination for same endian platforms.

Oracle Database 12.2 includes cross-platform PDB backup and restore into a CDB by unplugging at backup step and plugging at restore step as long as the source platform and destination platform have the same endian format. For a cross-endian migration, the tablespaces have to be exported and imported with Data Pump, either using the conventional expdp/impdp or the Full Transportable expdp/impdp.

  1. Before backing the PDB, ensure that the prerequisites are satisfied.

  2. Determine the location of the endian conversion.

    • –  The FOR TRANSPORT clause creates a cross-platform backup indicating that the backup set can be transported to any destination database.

    • –  The TO PLATFORM clause indicates that the conversion performs on the source database for a specific platform and can be restored on that specific platform.

  3. Use the BACKUP FOR TRANSPORT or TO PLATFORM command to create a cross- platform PDB backup set on the source host. The new UNPLUG INTO clause creates the XML file containing the metadata for the PDB.

    1. Use any operating system utilities to transfer the created backup set and XML file.

    2. Use the RESTORE FOREIGN command to restore the cross-platform PDB backup set on the destination host. The new USING clause uses the XML file to plug the appropriate files for the new PDB.

    3. Open the PDB.

We hope the content could useful for your Oracle DBA Tasks!

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ByJoel Pérez ( Oracle ACE Director )

Oracle 12cR2: Upgrading a Single Regular PDB from 12.1 to 12.2

Upgrading a Single Regular PDB from 12.1 to 12.2

Hi Readers 

You can also upgrade a specific PDB without upgrading the whole CDB:

  1. Prepare the PDB to be unplugged and upgraded in another CDB by executing the same jar file as in the previous slide but only on the PDB. The fixup scripts and log files are generated in the pre-upgrade directory of the source database, in the $ORACLE_BASE/cfgtoollogs/SID/preupgrade directory. Execute the preupgrade_fixups_<PDB>.sql script in the PDB.

  2. Close the PDB from the 12.1 CDB to unplug it. Then plug it into the target 12.2 CDB.

  3. Open the PDB in the target 12.2 CDB in upgrade mode and upgrade it to 12.2.

         $ cd $ORACLE_HOME/rdbms/admin
    
         $ ./catctl.pl -c 'PDB1' -l /tmp/upgrade catupgrd.sql
    
  4. Finally close and open the PDB in normal mode. Use the catcon.pl script to execute the postupgrade_fixups.sql and utlrp.sql scripts. You can verify that all issues have been fixed by running the utlu122s.sql script.

In case the PDB is migrated to an application root, shared objects can be marked as metadata-linked or data-linked by using the DBMS_PDB.SET_METADATA_LINKED or DBMS_PDB.SET_DATA_LINKED or DBMS_PDB.SET_EXT_DATA_LINKED procedures. The user responsible for the migration can be granted EXECUTE on the new DBMS_PDB_ALTER_SHARING package rather than on the DBMS_PDB package to avoid enabling the user to execute other DBMS_PDB procedures.

We hope the content could useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Oracle 12cR2: Controlling the Degree of Parallelism of Queries

Controlling the Degree of Parallelism of Queries

Hi Readers 

Oracle Database 12.2 introduces a new instance parameter to control the Degree of Parallelism of queries, which involves a containers() construct.

By default, a query involving a containers() construct uses a DOP that is equal to the following value:

  • In the case of a query in the CDB root, the value is (1 + number of open PDBs).

  • In the case of a query in an application root, the value is (1 + number of open application PDBs).

    If the value of this parameter is less than 65535, the value is used as the DOP for all queries involving containers():

  • In the session if the value was set at the session level

  • In the instance if the value was set at the system level

We hope the content could useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Oracle 12cR2 (Tip): Local UNDO Mode Versus Shared UNDO Mode

Local UNDO Mode Versus Shared UNDO Mode

Hi Readers

Using the local UNDO mode is required when cloning a PDB in hot mode or performing a near-zero downtime PDB relocation or refreshing PDBs or using proxy PDBs.

You can set a CDB in local UNDO mode either at CDB creation or by altering the CDB property.

  • When the database property LOCAL_UNDO_ENABLED is FALSE, which is the default, there is only one UNDO tablespace that is created in the CDB root and that is shared by all containers.

  • When LOCAL_UNDO_ENABLED is TRUE, every container in the CDB uses local undo and each PDB must have its own local UNDO tablespace. To maintain ease of management and provisioning, UNDO tablespace creation happens automatically and does not require any action from the user. When a PDB is opened and an UNDO tablespace is not available, it is automatically created.

We hope the content could useful for your Oracle DBA Tasks!

This article is brought by Yunhe Enmo (Beijing) Technology Co.,LTD En.enmotech.com

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ByJoel Pérez ( Oracle ACE Director )

Oracle 18c: RAC New Features.. What’s NEWS..

Oracle 18c: RAC New Features.. What’s NEWS..

Oracle 18c: RAC新功能一览

By Joel Peréz Skant Gupta

This article is brought by en.enmotech.com

 

Oracle Real Application Cluster is an Oracle solution that seems will improve in a endless way. Every Oracle Release we have new features that perhaps we never expected to have. Oracle 18c is not the exception, we have amazing new features.

 

Oracle EVP of Server Technologies Andy Mendelsohn said:

“We’re not going to do that with our SLAs,” he said. “We’re going to implement online patching using RAC rolling upgrades and use best practices on top of one of the most powerful and reliable platforms for running Oracle Database—Oracle Exadata.”

 

Oracle Autonomous Database Cloud will offer instant elasticity for databases. For Instance, now a customer can go from 8 cores of database computing to 16 cores to scale-up for end-of-quarter processing, then back down to the less expensive 8 cores. “We can do it instantly because our RAC technology lets you scale across clusters of servers very quickly, so we won’t have to move data around,” he said. “In order to grow its databases, Amazon has to move data to a new, bigger system and this can take hours or days”, he said. “That’s not truly elastic.” Mendelsohn envisioned a scenario using Oracle where, “you could even shut down all your compute CPUs over the weekend so you’re not paying for them, then start them up again on Monday morning,” he said. “That’s elastic.”

 

“Ask why customers run big transaction or operational systems on Oracle and their top reasons will probably be high availability, reliability, and scalability,” Mendelsohn said. These customers have grown to rely on technologies like Oracle Real Application Clusters (RAC), Oracle Active Data Guard, and Oracle’s Exadata database machine, which, he said, are unique to Oracle, “and are highly fault tolerant and scalable and that allow systems to run at 99.995 percent availability,” he said.

 

According to the last paragraphs, you could easily realise that Oracle RAC will be one of the key components related to the functioning of Autonomous Databases.

 

So.. Let’s see some technical points..

 

Oracle Real Application Cluster is one of the key components of Autonomous Databases for several reasons:

  • Rolling Patch
  • Rolling Upgrade
  • Domain Services Cluster Management Service (DSC) working with Machine learning ( This started in 12.2. , however in Oracle18c we will experiment a more advance functioning )
  • and more..

 

The DSC Management Service

 

 

 

 

 

 

 

 

 

Applied Machine Learning for Database Diagnostics

  • Efficient diagnosis using Machine Learning
  • Automatically performs corrective actions to prevent possible issues
  • Provides simple alerts & recommendations for issues that require manual intervention