Migrate database from One RMAN catalog to another RMAN catalog

In that scenario we will move catalog from stagecat(source catalog) to target database CLOUD.

[oracle@rmancatalog2 ~]$ rman target / catalog=rman/kjh7Rjsr1

Recovery Manager: Release 11.2.0.3.0 – Production on Wed Dec 21 09:28:47 2016

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: CLOUD (DBID=1801493836)

connected to recovery catalog database

RMAN> list db_unique_name all;

List of Databases
DB Key  DB Name  DB ID            Database Role    Db_unique_name
—–— ——- —————– —————  ——————
49382        DB2   3896599226       PRIMARY          DB2
49382        DB2   3896599226       STANDBY          DB1
1                DB1   4139331099       PRIMARY          DB1
1                DB1   4139331099       STANDBY          DB2

SQL> select * from rman.rc_database;

RMAN> import catalog rman/U98wsjdw2#@stagecat;

Starting import catalog at 2016-12-21 09:36:33

connected to source recovery catalog database

import validation complete

Finished import catalog at 2016-12-21 09:36:40

RMAN> list db_unique_name all;

List of Databases
DB Key  DB Name  DB ID            Database Role    Db_unique_name
—–— ——- —————– —————  ——————
548781  DB3      829073653        PRIMARY          DB3
514674  DB4      1753676295       PRIMARY          DB4
523618  DB5      3779067219       PRIMARY          DB5
551022  DB6      4018492764       PRIMARY          DB6
545408  DB7      4110887114       PRIMARY          DB7

SQL> select * from rman.rc_database;

On the Source Catalog, the database will be automatically unregistered after the IMPORT CATALOG. If you need to retain the catalog on the source side even after the import then use keyword NO UNREGISTER.

Example:

RMAN> import catalog rman/U98wsjdw2#@stagecat no unregister;