Message Oracle RMAN-06525 - RMAN retention policy is set to none

ERRORRMAN retention policy is set to none
CAUSECommand DELETE OBSOLETE and REPORT OBSOLETE requires that either: * RMAN retention policy is not NONE or, * RMAN retention policy is specified with REPORT/DELETE command.
ACTIONEither configure RMAN retention policy with CONFIGURE command or specify it at the end of DELETE/REPORT command.