Tag Archives: RAC

What’s Really Behind an Oracle “World Record” ?

It’s so sweet. Oracle is really trying. They realize how important it is to have industry standard benchmark proof points. They realize that these proof points should use important workloads. Like SAP. But that’s where it ends. In Oracle’s latest press release, they claim a “world record” on the SAP for Utilities Standard Application Benchmark. [...] Continue reading

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10.2.0.4 Agent install on a 6 node cluster.

Installing EM Agent on RAC. Had to install EM Agent on 6 nodes in a cluster, had some problems which we resolved. Here’s the walk through.

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Enabling Archiving on RAC.

Archiving on RAC can be enabled at the database level, and has to be done the same as any other database, in mount mode.

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crsctl stop crs and CRS-2794

In a typical crsctl command being issued, mostof the output can be ignored. There are however items to pick up where the process fails.

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RAC Oracle Raw Disk Permissions.

Don’t play with the permissions on raw devices. Doing so can render them unreadable to oracle.

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Where’s the OCR configuration ?

The ocr configuration file sites in /etc/oracle/ocr.loc. This is queried with ocrstatus to display the location of the voting disks in the cluster.

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Converting from RAC to single instance.

Oracle does not support conversion of a RAC database to a single instance, or at least does not supply any tool to perform this change as of oracle 10g.

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How to Manually Convert Single Instance to RAC on Unix.

There is now the rconfig utility in 10g which allows you to convert a single instance to a RAC. However, you can still do this manually.

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