unregistering old dbid's from rman catalog

Chuck

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Jun 19, 2008, 11:34:47 AM6/19/08

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Looking for assistance in unregistering old dbid's from the rman
catalog. The db in question is a test db that is duplicated from a
production db every so often and each time it gets duplicated, it
creates a new dbid for the test db, effectively abandoning the old dbid
and all it's associated backups. These backups have already been removed
externally from the backup media. I want to get rid of all references to
it from the rman catalog now.

The current version of the db is 10.2.0.3 though some of the old backups
were taken in 9.2.0.5 and 9.2.0.8. I've tried following the example from
the rman documentation for the UNREGISTER DATABASE command
(http://tinyurl.com/4rpe8u) but it yields the error below. Note that the
db name and catalog name are correct in the actual script but were
replaced in text below. What am I doing wrong? TIA

$ rman catalog rmanuser@rmancatname

Recovery Manager: Release 10.2.0.3.0 - Production on Thu Jun 19 11:27:20
2008

recovery catalog database Password: <password entered here>
connected to recovery catalog database

RMAN> run
2> {
3> set dbid 4134200886;
4> UNREGISTER DATABASE dbname NOPROMPT;

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "unregister": expecting one of:
"allocate, alter, backup, beginline, blockrecover, catalog, change,
copy, convert, crosscheck, configure, duplicate, debug, delete, execute,
endinline, flashback, host, mount, open, plsql, recover, release,
replicate, report, restore, resync, }, set, setlimit, sql, switch,
startup, shutdown, send, show, transport, validate"
RMAN-01007: at line 4 column 1 file: standard input

rogergorden@....gmail.com

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Jun 19, 2008, 3:09:04 PM6/19/08

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Since you're using a catalog, login to the database as the schema
owner of the catalog and issue this query:

SELECT db_key, db_id
FROM db
WHERE db_id = 4134200886;

DB_KEY DB_ID
---------- ----------
nnnnnnn 4134200886

Then execute the following package:

SQL> execute dbms_rcvcat.unregisterdatabase(nnnnnnn, 4134200886);

That should do it for you.

Roger Gorden
Senior Database Administrator John Wiley and Sons Inc.

Chuck

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Jun 20, 2008, 9:58:12 AM6/20/08

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rogergorden@....gmail.com wrote:

> SQL> execute dbms_rcvcat.unregisterdatabase(nnnnnnn, 4134200886);

Thanks. I was aware of that stored procedure but I thought that the 10g
UNREGISTER DATABASE command rendered it obsolete. I'm trying to figure
out why the command didn't work for me. I copied it verbatim from the
manual.

FYI you can also get the dbid and dbkey from rman itself. Connect to the
catalog and any target db and run "list incarnation of database dbname;".