rman backing up standby DB

[PaulH]

DUH! You are OK, the db name and dbid are the SAME as the primary.

PS:
To be more sure, just type:

rman target / CATALOG rman/rman@CATalog
.

Any suggestions??

$ echo $ORACLE_SID
stdby


$ rman target / CATALOG rman/rman@CATalog

Recovery Manager: Release 10.2.0.1.0 - Production on Mon May 11 18:51:13 2009

Copyright (c) 1982, 2005, Oracle. All rights reserved.

connected to target database: PRI (DBID=615014014)
connected to recovery catalog database

RMAN> register database;

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of register command at 05/11/2009 18:51:58
RMAN-08040: full resync skipped, control file is not current or backup