Tag: Oracle RAC

How to a recreate disk group used by CRS

I will go through detailed steps here on how to recreate a disk group used by CRS. Some things to bear in mind: – I created this cluster based on another existing cluster, so I just followed the same patterns…

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How to run DBSAT on RAC Instances

The scope of this article is to provide a brief summary of how to run Oracle Database Security Assessment Tool (DBSAT) on Oracle Real Application Cluster using the parameters to exclude sections on the Reporter to avoid duplicated information into…

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How to fix the status of of the Oracle GI CRS after a failed upgrade

A couple of weeks ago I was working on a two-node Oracle Grid Infrastructure upgrade from 12.1 to 18.5. Everything was going great as both rootupgrade.sh scripts ran correctly, so the only thing pending to run was the gridSetup.sh -executeConfigTools …

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Oracle service secrets: more performance with less load-balancing

A huge but often overlooked aspect of tuning cluster databases is workload management. That means controlling on which and how many nodes a RAC database should actively work. The default service and most intuitive configuration is to spread the workload…

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Oracle RAC on Azure

Microsoft Azure provides an acceptable and affordable platform for a training environment. I am an Oracle DBA, and use it to test functionality, new technologies and features of different Oracle products. Azure supplies a template for Oracle linux and it…

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Oracle RAC scalability: slides from Oracle OpenWorld 2015

Christo Kutrovsky revisits his OOW 2015 presentation and explores the type of challenges that come with scaling an application horizontally via Oracle RAC.

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Slimming Down Oracle RAC 12c’s resource footprint

Oracle Grid Infrastructure 12c uses a considerable amount of RAM and CPU resources; here are a few tips to shoehorn it into a 2GB virtual machine.

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Create Windows Service for Oracle RAC

It’s my first time on RAC system for Windows and I’m happy to learn something new to share. I created a new service for database (restoredb) only to find out the ORACLE_HOME for the service is “c:\\oracle\\product\\10.2.0\\asm_1” Any ideas as…

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