I'm New to Oracle and I am trying to get a backup to run thru the Oracle 9i GUI, and I am getting the following error condition. Can anyone provide any insite and/or a solution.

Thanks

Recovery Manager: Release 9.0.1.1.1 - Production

(c) Copyright 2001 Oracle Corporation. All rights reserved.

RMAN>
connected to target database: WRDB (DBID=3459876564)
using target database controlfile instead of recovery catalog

RMAN>
RMAN> run {
2> allocate channel WRDBPipe type disk format 'b_%u_%s_%p';
3> backup ( database include current controlfile setsize 1024000 filesperset 20 );
4>
5> }
allocated channel: WRDBPipe
channel WRDBPipe: sid=10 devtype=DISK

Starting backup at FEB 26 2002 00:00:36
channel WRDBPipe: starting full datafile backupset
channel WRDBPipe: specifying datafile(s) in backupset
input datafile fno=00008 name=D:\ORACLE\ORA90\DATABASE\WRDB_DEV.DBF
input datafile fno=00005 name=D:\ORACLE\ORA90\WRDB\INDX01.DBF
input datafile fno=00007 name=D:\ORACLE\ORA90\WRDB\USERS01.DBF
input datafile fno=00004 name=D:\ORACLE\ORA90\WRDB\DRSYS01.DBF
channel WRDBPipe: starting piece 1 at FEB 26 2002 00:00:37
released channel: WRDBPipe
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00579: the following error occurred at 02/26/2002 00:00:53
RMAN-03006: non-retryable error occurred during execution of command: backup
RMAN-12004: unhandled exception during command execution on channel WRDBPipe
RMAN-10035: exception raised in RPC: ORA-00600: internal error code, arguments: [20516], [krbb.c], [1603], [524288], [6144], [], [], []
RMAN-10031: ORA-19583 occurred during call to DBMS_BACKUP_RESTORE.BACKUPPIECECREATE

RMAN> **end-of-file**

RMAN>

Recovery Manager complete.
child process exited abnormally