Category Archives: RAC

Oracle Restart not deprecated anymore

Oracle Restart ist the Clusterware for single instance systems. You can use it to run a single instance system with (almost) the same commands as a cluster. For example, Oracle Restart takes over Starting and stopping of listeners and database … Continue reading

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Which node is the OCR master node (AKA “OCR writer”) in a RAC?

There are several ways to answer this question: Look for “OCR master” in the log files of crsd and check olsnodes for the node ID Check which node did the most recent automatic OCR backup

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Oracle 12c: Changed parameter naming for “srvctl”

Over time, “srvctl” became a really powerful for the administration of resources of an Oracle cluster. Oracle added new components and options in every new version of the Grid Infrastructure software. With Oracle 12.1.0.2, “srvctl -help” lists 266 options for … Continue reading

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Oracle Linux 7.2 and Grid Infrastructure 11.2.0.4 – A marriage with obstacles

There may be reasons to run an Oracle cluster with the new version of Oracle Linux – version 7.2 – and the „old“ but stable release of the Grid Infrastructure, 11.2.0.4. It‘s certified, it works – but there are some … Continue reading

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Successful RAC Attack session at Duesseldorf

Last Wednesday, August 19th, we had the first RAC attack session at Duesseldorf. 14 participants from the local area, but also from Nuremberg and the Netherlands actively installing Oracle RAC on their notebooks. We enjoyed it and it was a … Continue reading

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