Oracle DB backup Failed

[Kingkill]

I am using Veritas NetBackup 4.5 and using RMAN script to backup database for Oracle 9.2.0.6.0.

My backup failed and here what's written in the log:

Starting backup at 08-OCT-09
channel ch00: starting incremental level 0 datafile backupset
channel ch00: specifying datafile(s) in backupset
including current controlfile in backupset
input datafile fno=00013 name=/BTM/oracle/intraday/oradata/IRISBMP/TS_ORD01.DBF
input datafile fno=00015 name=/BTM/oracle/intraday/oradata/IRISBMP/TS_IDX_ORD01.DBF
input datafile fno=00001 name=/BTM/oracle/intraday/oradata/IRISBMP/system01.dbf
input datafile fno=00017 name=/BTM/oracle/intraday/oradata/IRISBMP/system02.dbf
channel ch00: starting piece 1 at 08-OCT-09
channel ch01: starting incremental level 0 datafile backupset
channel ch01: specifying datafile(s) in backupset
input datafile fno=00011 name=/BTM/oracle/intraday/oradata/IRISBMP/TS_IDX_DATA_01.DBF
input datafile fno=00014 name=/BTM/oracle/intraday/oradata/IRISBMP/TS_LIM01.DBF
input datafile fno=00016 name=/BTM/oracle/intraday/oradata/IRISBMP/TS_IDX_LIM01.DBF
input datafile fno=00008 name=/BTM/oracle/intraday/oradata/IRISBMP/tools01.dbf
input datafile fno=00005 name=/BTM/oracle/intraday/oradata/IRISBMP/example01.dbf
channel ch01: starting piece 1 at 08-OCT-09
released channel: ch00
released channel: ch01
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ch00 channel at 10/08/2009 09:31:49
ORA-19506: failed to create sequential file, name="bk_9084_1_699701493", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: Error received from media manager layer, error text:
   Failed to open for backup.

Recovery Manager complete.
RMAN command failure
Resetting exit status to 6

Can anyone help me out on how to solve this?

there is a similar case in this forum
https://www-secure.symantec.com/connect/forums/ora-19511-error-received-media-manager-layer-error-te...

But where and how to check whether the Oracle DB was stuck in the Hot backup Mode. if the DB is stuck in Hot backup mode, why my daily operation which using this DB is running smooth?

Thanks

[Marianne]

Please share dbclient log on client.
You also need to check Agent Compatibility Guide. 4.5 GA did not support Oracle 9.2.
Why on earth are you running such an old, unsupported version of NBU? - End of Support Life: July 1, 2006

[Kingkill]

sorry, the Oracle should be Oracle 8.1.7. they are plan to upgrade by end of this year. the backup running well until last weekend. i try to copy the dbclient log, but the inside the folder is empty. the permission for the folder is 777 (Hp-UX 11.11).

Thanks

[Will_Restore]

check this technote
http://seer.entsupport.symantec.com/docs/278261.htm

[Kingkill]

i had go through this technote, but the problem still the same, and the backup is not failed immediately with error 6. out of 10 child process, only 1 or 2 is failed with error 6.

[Marianne · Accepted solution]

That sounds like a timeout. See what the CLIENT_CONNECT and CLIENT_READ timeouts are on the media server and add about 15 minutes.