DB Register with RMAN Catalog Issue

RMAN.DBMS_RCVCAT version 11.02.00.04 in RCVCAT database is too old

I have created a 12c Database recently and when trying to register database I have received below warning message

RMAN> Register Database PL/SQL package RMAN.DBMS_RCVCAT version 11.02.00.04 in RCVCAT database is too old PL/SQL package RMAN.DBMS_RCVCAT version 11.02.00.04 in RCVCAT database is too old
RMAN-00571: ======================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ======================================================
RMAN-03002: failure of register command at 11/04/2015 10:12:11RMAN-06429: RCVCAT database is not compatible with this version of RMAN
I tried to upgrade the database and I have received below error

RMAN> upgrade catalog;
RMAN-00571: ======================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ======================================================
RMAN-07539: insufficient privileges to create or upgrade the catalog schema
It looks like more privileges needed to upgrade the catalog schema. But In 12c do not grant any privileges manually to upgrade catalog. Instead you need to run below script provided by oracle
$ sqlplus sys/xxxx@RMANCAT as sysdba
SQL> @$ORACLE_HOME/rdbms/admin/dbmsrmansys.sql
Once you run above scripts, now you can upgrade the catalog
$ rman TARGET / CATALOG rman/xxxxx@RMANCAT
RMAN> upgrade catalog; recovery catalog owner is RMAN enter UPGRADE CATALOG command again to confirm catalog upgrade
RMAN> upgrade catalog; recovery catalog upgraded to version 12.01.00.02 DBMS_RCVMAN package upgraded to version 12.01.00.02 DBMS_RCVCAT package upgraded to version 12.01.00.02.
RMAN> register database; database registered in recovery catalog starting full resync of recovery catalog full resync complete
Hope this helps you