To migrate Oracle ASM disk groups without Oracle Cluster Registry (OCR) or voting files to Oracle ASMFD:

  1. Log in as the Oracle Grid Infrastructure owner on any node to run the commands in this procedure.
  2. List the existing disk groups:
    $ $ORACLE_HOME/bin/asmcmd lsdg
  3. List the associated disks:
    $ $ORACLE_HOME/bin/asmcmd lsdsk -G diskgroup
  4. Check if Oracle ASM is active:
    $ $ORACLE_HOME/bin/srvctl status asm
  5. Stop the databases and dismount the disk group on all nodes:
    $ $ORACLE_HOME/bin/srvctl stop diskgroup -diskgroup diskgroup -f
  6. Label all existing disks in the disk group by running the following command for each disk on a Hub node:
    $ $ORACLE_HOME/bin/asmcmd afd_label label disk_path --migrate
  7. Scan the disks on all Hub nodes:
    $ $ORACLE_HOME/bin/asmcmd afd_scan 
  8. Start the databases and mount the disk group on all nodes:
    $ $ORACLE_HOME/bin/srvctl start diskgroup -diskgroup diskgroup

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