Backup and clone operations fail if stale entries of the cloned disk group exists

Description

When you perform a backup or clone operation, the operation might fail if stale entries of the cloned disk group exist in the asm_diskgroups parameter.

Error message

ORA-15130: diskgroup "DISKGROUP_SCO_ID" is being dismounted

Corrective action

You must clean up the asm_diskgroups string to remove the stale entry for DISKGROUP_SCO_ID.