Migrating Oracle Cluster Registry(OCR) location

Complete the following procedure:

1.Use the OCRCHECK utility to verify that a copy of OCR other than the one you are going to replace is online, using the following command:

$ ocrcheck

OCRCHECK displays all OCR locations that are registered and whether they are available (online). If an OCR location suddenly becomes unavailable, then it might take a short period for Oracle Clusterware to show the change in status.

Note:   The OCR location that you are replacing can be either online or offline.

2. Use the following command to verify that Oracle Clusterware is running on the node on which the you are going to perform the replace operation:

$ crsctl check crs

3. Run the following command as root to replace the current OCR location using either destination_file or +ASM_disk_group to indicate the current and target OCR locations:

# ocrconfig -replace <current_OCR_location> -replacement <new_OCR_location>

If you have only one OCR location, then use the following commands:

# ocrconfig -add +new_storage_disk_group
# ocrconfig -delete +current(old)_disk_group

Note:
If your cluster configuration changes while the node on which OCR resides is stopped, and the Oracle Clusterware stack is running on the other nodes, then OCR detects configuration changes and self-corrects the configuration by changing the contents of the ocr.loc file.