rman sbt errors

[magskn]

My backups have started failing intermittently with sbt errors
It will fail on allocating channels, sometimes the first, sometimes the third. Usually, but not always I can start another backup session immediately after one fails and it will run successfully.
Any ideas?


The database in on NT 4.0 version 8.1.7
The omniback client resides on NT 4.0 version 4.1
The omniback cell server is on HP 11.0 version 4.1

Here is the error stack
RMAN-03022: compiling command: allocate
RMAN-03023: executing command: allocate
RMAN-08030: allocated channel: dev_2
RMAN-08500: channel dev_2: sid=15 devtype=SBT_TAPE
RMAN-08526: channel dev_2: MMS Version 65.4.10.176

RMAN-03022: compiling command: allocate
RMAN-03023: executing command: allocate
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03007: retryable error occurred during execution of command: allocate
RMAN-07004: unhandled exception during command execution on channel dev_3
RMAN-10035: exception raised in RPC: ORA-19554: error allocating device, device type: SBT_TAPE, device name:
ORA-19557: device error, device type: SBT_TAPE, device name:
ORA-27000: skgfqsbi: failed to initialize storage subsystem (SBT) layer
ORA-19511: Unknown SBT error code = 704755104, errno = 16
RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.DEVICEALLOCATE

Thanks
Margaret

[julian]

NT :-)

Stop the Oracle Services on NT and restart for the backup to tape to take effect again.

Tell me if this helped.

[magskn]

While I didn't do this I did have the NT box rebooted so the services would have been stopped and restarted. The backup did work last night for the first time in 5 nights. It's very strange. The strange part for me is that the schedualed backup will fail but I can turn around two minutes later and kick off a backup and it will run.

Any other ideas?
Thanks
Margaret

[julian]

Originally posted by magskn
While I didn't do this I did have the NT box rebooted so the services would have been stopped and restarted. The backup did work last night for the first time in 5 nights. It's very strange. The strange part for me is that the schedualed backup will fail but I can turn around two minutes later and kick off a backup and it will run.

Any other ideas?
Thanks
Margaret

It's NT Margaret :-)