Use the crsctl query crs softwarepatch command to display the configured patch level of the installed Oracle Clusterware.
Syntax
crsctl query crs softwarepatch [host_name]
If you specify a host name, then CRSCTL displays the patch level of Oracle Clusterware installed on that host. Otherwise, CRSCTL displays the patch level of Oracle Clusterware installed on the local host.
Example
The crsctl query crs softwarepatch command returns output similar to the following:
Oracle Clusterware patch level on node [node1] is [456789126]