Restoring the Oracle Cluster Registry in an Oracle Restart Environment

Note:

  • OCR is present for backward compatibility.

  • Once an OCR location is created, it does not get updated in the Oracle Restart environment.

  • If the Oracle Restart home has been backed up, and if there is a failure, then restoring the Oracle Restart home restores OCR.

Use the following procedure to restore OCR in an Oracle Restart environment:

  1. Stop Oracle High Availability Services by running the following command as root on all of the nodes: 
    # crsctl stop has [-f]
  2. Run the ocrcheck -config command to determine the OCR location and then create an empty (0 byte) OCR location with appropriate permissions in that location.
  3. Restore OCR by running the following command as root: 
    # crsctl pin css -n host_name

    Note:

    Ensure that the OCR devices that you specify in the OCR configuration exist and that these OCR devices are valid.

    See Also:

    Oracle Grid Infrastructure Installation Guide for information about creating OCRs

  4. Run the ocrcheck command to verify the integrity of OCR:
  5. Start Oracle High Availability Services by running the following command on all of the nodes: 
    $ crsctl start has