Home > oracle-install > Removing a node from Oracle RAC 11gR2

Removing a node from Oracle RAC 11gR2

In this article we will see how to remove an unreachable or destroyed node from an existing 11gr2 cluster.

The example below is based on Release.

I have 2 node oracle rac on esxi and i am powering off second node and you can see the following message in the first node log file.

cd /u01/app/root/product/11.2.0/grid/log/oral8001

[cssd(11407)]CRS-1601:CSSD Reconfiguration complete. Active nodes are oral8001 .
2011-08-05 10:54:11.301
[crsd(11662)]CRS-5504:Node down event reported for node ‘oral8002’.
2011-08-05 10:54:11.488
[crsd(11662)]CRS-2773:Server ‘oral8002’ has been removed from pool ‘Free’.

Assumption is node2 is completely dead and we are deleting it from the existing cluster.Now node2 is not reachable then use node1 to do the cleanup process.

$ ./olsnodes -s -t
oral8001        Active  Unpinned
oral8002        Inactive        Unpinned

[root@oral8001 bin]# ./crsctl delete node -n oral8002
CRS-4661: Node oral8002 successfully deleted.

$ pwd

$ ls
addLangs.sh  attachHome.sh  filesList.bat         filesList.sh  resource      runInstaller     runSSHSetup.sh
addNode.sh   detachHome.sh  filesList.properties  lsnodes       runConfig.sh  runInstaller.sh

$ ./runInstaller -updateNodelist ORACLE_HOME=/u01/app/root/product/11.2.0/grid “CLUSTER_NODES={oral8001}” CRS=true
Starting Oracle Universal Installer…

Checking swap space: must be greater than 500 MB.   Actual 2391 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /u01/app/oraInventory
‘UpdateNodeList’ was successful.

$ ./olsnodes -s -n
oral8001        1       Active

if you have any database instances on this node use dbca and select instance management and delete the instance.



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