Check Oracle Clusterware patch release

1.Check Oracle Clusterware software version on both nodes:

[root@host01 ~]# crsctl query crs softwareversion -all
 Oracle Clusterware version on node [host01] is [19.0.0.0.0]
 Oracle Clusterware version on node [host02] is [19.0.0.0.0] 

2. Check Oracle Clusterware release patch on both nodes:

[root@host01 ~]# crsctl query crs  releasepatch
 Oracle Clusterware release patch level is [724960844] and the complete list of patches [29401763 29517242 29517247 29585399 ] have been applied on the local node. The release patch string is [19.3.0.0.0]. 

[root@host01 ~]# crsctl query crs releasepatch
 Oracle Clusterware release patch level is [724960844] and the complete list of patches [29401763 29517242 29517247 29585399 ] have been applied on the local node. The release patch string is [19.3.0.0.0].

You can also, check the help $crsctl query crs