How to find RAC Cluster Name and Version

How can you find the name of your RAC Cluster

It is really easy to find the name or RAC cluster. Just use the below methods

Option 1

execute below command from CRS_HOME/bin

$cemutlo -n
rac11

Option 2

execute below command from CRS_HOME/bin

$olsnodes -c

rac11

Option 3

navigate to the directory $CRS_HOME/cdata. Under this directory you will find a directory with the name of cluster which includes the OCR backup

cd $CRS_HOME/cdata

ls

localhost  node1 node1.olr  rac11

How to Find the Clusterware (CRS) version in Oracle RAC

follow the steps below to find the clusterware version (Grid infrastructure ) of your RAC cluster

to see on current node

$crsctl query crs softwareversion
Oracle Clusterware version on node [node1] is [12.1.0.2.0]

to see on all the nodes

$ crsctl query crs softwareversion -all
Oracle Clusterware version on node [node1] is [12.1.0.2.0]
Oracle Clusterware version on node [node2] is [12.1.0.2.0]

to see on a particular node

$ crsctl query crs softwareversion node2
Oracle Clusterware version on node [node2] is [12.1.0.2.0]

You can check the active version from below command

$ crsctl query crs activeversion
Oracle Clusterware active version on the cluster is [12.1.0.2.0]