Query the cluster active patchlevel in the OCR backup

To identify OCR backup where the cluster active patch level matches, you need to run the following:

Identify cluster active patch level:

[root@rac1 ~]# crsctl query crs activeversion -f
Oracle Clusterware active version on the cluster is [19.0.0.0.0]. 
The cluster upgrade state is [NORMAL]. 
The cluster active patch level is [2701864972].

If backup is located on diskgroup:

[root@rac1 ~]# ocrdump -stdout -keyname SYSTEM.version.activeversion.patchlevel -backupfile +GRID:/marirac/OCRBACKUP/backup_20200425_171539.ocr.266.1038676539
04/26/2020 12:28:20
+GRID:/marirac/OCRBACKUP/backup_20200425_171539.ocr.266.1038676539
/u01/app/19.3.0/grid/bin/ocrdump.bin -stdout -keyname SYSTEM.version.activeversion.patchlevel -backupfile +GRID:/marirac/OCRBACKUP/backup_20200425_171539.ocr.266.1038676539
[SYSTEM.version.activeversion.patchlevel]
UB4 (10) : 2701864972
SECURITY : {USER_PERMISSION : PROCR_ALL_ACCESS, GROUP_PERMISSION : PROCR_READ, OTHER_PERMISSION : PROCR_READ, USER_NAME : root, GROUP_NAME : root}

If backup is located on filesystem:

[root@rac1 ~]# ocrdump -stdout -keyname SYSTEM.version.activeversion.patchlevel -backupfile /tmp/backup_07_13_47_25
04/26/2020 12:26:57
/tmp/backup_07_13_47_25
/u01/app/19.3.0/grid/bin/ocrdump.bin -stdout -keyname SYSTEM.version.activeversion.patchlevel -backupfile /tmp/backup_07_13_47_25
[SYSTEM.version.activeversion.patchlevel]
UB4 (10) : 2701864972
SECURITY : {USER_PERMISSION : PROCR_ALL_ACCESS, GROUP_PERMISSION : PROCR_READ, OTHER_PERMISSION : PROCR_READ, USER_NAME : root, GROUP_NAME : root}