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Thread: Backup of Oracle Cluster Registry (OCR) in Oracle RAC

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    Backup of Oracle Cluster Registry (OCR) in Oracle RAC

    There are two methods for OCR Backup (Oracle Cluster Registry)

    1. Automatically generated OCR files under $CRS_HOME/cdata/crs
    2. OCR export/logical backup

    The Oracle Clusterware automatically creates OCR backups
    -Every four hours: last three copies
    -At the End of the Day: last two copies
    -At the end of the week: last two copies.

    To backup OCR file, copy the generated file from $CRS_HOME/cdata/crs to your backup directory (/backup/oracle).

    You must run the backup as “root”.

    Run the below command to take OCR export backup.
    # ocrconfig -export export_file_name

    With Oracle RAC 11g Release 1, you can take a manual backup of the OCR with the command:

    # ocrconfig –manualbackup


    Restoration of OCR from Backup : Restore-and-Recover-OCR-from-Backup

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