RMAN-06014 when UNREGISTER DB_UNIQUE_NAME 'db_unique_name' INCLUDING BACKUPS in 11.2.0.1 to 11.2.0.3

Hi,

I was trying to unregister an old standby database, that no longer exists since a few months ago, from my recovery catalog.

I try to use the UNREGISTER DB_UNIQUE_NAME with the INCLUDING BACKUPS options in order to remove the metadata. This command is documented here ( UNREGISTER ). But it returns the error message RMAN-06014: command not implemented yet: unregister db & bck

RMAN> list db_unique_name of database;




Lista de Bases de Datos
Clave BD  Nom. BD  ID Base Datos            Rol de Base de Datos    Db_unique_name
------- ------- ----------------- ---------------  ------------------
29001   MYDB  943768957        PRIMARY          MYDB_PRIM
29001   MYDB  943768957        STANDBY          MYDB_STBY1
29001   MYDB  943768957        STANDBY          MYDB_STBY2


RMAN> unregister db_unique_name 'mydb_stby1' including backups;


RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: fallo del comando unregister db & bck en 03/19/2014 14:00:22
RMAN-06014: comando todavía no implementado: unregister db & bck