GSM-45902
This command deletes backups with specific tags and obsoleted backups. If both parameters "-TAG" and "-OBSOLETE" are not provided, no backups are deleted.
RMAN considers a backup from a database obsolete if it is not needed to restore the database to a point within the configured backup retention window.
RMAN considers a backup from a database obsolete if it is not needed to restore the database to a point within the configured backup retention window.
Cause
GDSCTL help message.