DBCA 12.2 does not update /etc/oratab in GI / RAC

DBCA 12.2 does not update /etc/oratab in GI / RACInteresting things happen. And I learned (credits to Arun Gupta and others) that there is a change in Oracle Database 12.2 environments I wasn’t aware: The DBCA 12.2 does not update /etc/oratab in GI / RAC environments. Let me give you some extra information and hints on this topic as it may cause some strange situations.… [Read More]

GIMR DB in Oracle Database 12.2

I did blog in the past already about the Grid Infrastructure Management Repository Database (GIMR DB):

Grid Infrastructure Management Repository (GIMR)database now mandatory in Oracle GI 12.1.0.2

SID and DBNAME are kept the same in Oracle Database 12.2. But there are a few changes and additions in Oracle Database 12.2.0.1.

GIMR DB in its own Disk Group

During a fresh installation of Oracle Grid Infrastructure 12.2.0.1 you’ll have the chance to create a disk group for GIMR DB:

GIMR DB in Oracle Database 12.2

GIMR DB – Gets its own disk group in Oracle 12.2

But you can migrate GIMR DB into a separate disk group as well – just make sure the size is large enough (see below).… [Read More]

Keep your patch versions between Grid Infrastructure and Databases Homes in synch

Patch RecommendationI’ve had some interesting discussions with Anil Nair, our RAC Product Manager and a customer in the past days. The customer was looking for a definite statement that they can have a higher version of Patch Set Updates (PSUs) or Proactive Bundle Patches (BPs) in the Database homes than in the Grid Infrastructure home managing the resources.… [Read More]

Grid Infrastructure Management Repository (GIMR) – Datapatch?

I have blogged about the Grid Infrastructure Management Repository (GIMR) a while back:

Grid Infrastructure Management Repository (GIMR)database now mandatory in Oracle GI 12.1.0.2

And Markus Michalewicz, our Director of Product Management, Oracle Real Application Clusters (RAC), has published a very interesting and helpful insight article about GIMR on July 30, 2015.… [Read More]

Upgrade the Operating System in a RAC Environment

Last week at the upgrade workshop in Budapest a customer had a interesting and – I believe – not uncommon question.

“How can I upgrade my Linux Operating System in my RAC environment without taking the entire cluster down?”

In this specific case the customer wanted to upgrade from RHEL 5.10 to RHEL6 or RHEL7.… [Read More]

Grid Infrastructure PSU Jan 2015 – Am I too intolerant?

Germans are not only known for being precise and timely – but sometimes also for being too direct. Well, Roy could tell you stories … and I always honor his politeness 🙂

Enough about stereotypes. I work with a customer at the moment on their 12c upgrades. And I did recommend the most recent PSU (Patch Set Updates) for their Grid Infrastructure environments running Oracle Restart.… [Read More]

Grid Infrastructure Management Repository (GIMR)
database now mandatory in Oracle GI 12.1.0.2

During the installation of Oracle Grid Infrastructure 12.1.0.1 you’ve had the following option to choose YES/NO to install the Grid Infrastructure Management Repository (GIMR) database MGMTDB:

With Oracle Grid Infrastructure 12.1.0.2 this choice has become obsolete and the above screen does not appear anymore. The GIMR database has become mandatory.… [Read More]