Managing Grid Infrastructure 12c : Deletion of Node

Hello Readers,

I will be running through a series of Grid Infrastructure tasks like deletion of node, addition of node, serverpools and taf in 12c.

I would like to Thanks & appreciation Mr. Deepak Kumar from Bangalore India, for his nice work in sending this screenshots.

Without his time and effort this would not be possible at all, Please accept my thanks for all this and your kind thought to share to wider dba community through my blog.

In this post, we will see the deletion of node in 11gR2 Grid Infrastructure,  Lets's run the olsnodes to see the node list in cluster, Here we will be deleting the rac04 node.

1. On the NODE which needs to be deleted as root         

      [root@rac04]#cd /u01/app/12.1.0/grid/crs/install

2. Disable oracle clusterware applications and applications  on the node (rac3)      

      [root@rac04]#./rootcrs.pl –deconfig

3. From a node that will remain(rac1) , delete the node 

      [root@rac01 addnode]# cd /u01/app/12.1.0/grid/bin/

      [root@rac01 bin]# ./olsnodes -n –t

      [ grid@rac04 bin ]$ ./runInstaller -detachHome ORACLE_HOME=/u01/app/12.1.0/grid -silent -local

      Note: This is optional step, which you want to completely remove the node.

      [ grid@rac04 bin ]$ ./runInstaller -detachHome ORACLE_HOME=/u01/app/12.1.0/grid -silent -local

   Check olsnodes now, to check the node has successfully removed from the cluster.

    [root@rac01 bin]# ./olsnodes -n –t

5 On any NODE which shall exist . run the below command 
      [ grid@rac01 ~   ]$ cd /u01/app/12.1.0/grid/oui/bin/
      [ grid@rac01 bin ]$  ./runInstaller -updateNodeList ORACLE_HOME=/u01/app/12.1.0/grid "CLUSTER_NODES={rac01,rac02,rac03}" CRS=TRUE -silent