The backup failed to back up the requested files (6)

[YAG55]

Hello Team,

We are getting error on RMAN Backup.. please suggest what is the issue with it and what can be done to resolve it..Thanks.

Master, Media : SunOS 5.10 - NBU 7.6.1 

Client : SunOS 5.10 - NBU 7.6.0

Details Status :

01/23/2018 03:34:13 - Error bptm (pid=24606) error requesting media, TpErrno = Robot operation failed

01/23/2018 03:36:03 - Warning bptm (pid=24606) media id XXXXX load operation reported an error

01/23/2018 03:36:03 - current media XXXXX complete, requesting next media Any

01/23/2018 04:03:05 - Info dbclient (pid=31973) done. status: 6

01/23/2018 04:03:05 - Error bptm (pid=24606) media manager terminated by parent process

01/23/2018 04:03:06 - Info dbclient (pid=31973) done. status: 6: the backup failed to back up the requested files

01/23/2018 04:03:06 - end writing

the backup failed to back up the requested files  (6)

RMAN :

channel ch08: starting piece 1 at 23-JAN-18
RMAN-03009: failure of backup command on ch11 channel at 01/23/2018 01:24:40
ORA-27192: skgfcls: sbtclose2 returned error - failed to close file
ORA-19511: Error received from media manager layer, error text:
   Failed to process backup file <bk_ufbspbq5h_s551403_p1_t966125745>
ORA-19502: write error on file "bk_ufbspbq5h_s551403_p1_t966125745", blockno 16247297 (blo
cksize=512)
ORA-27030: skgfwrt: sbtwrite2 returned error
ORA-19511: Error received from media manager layer, error text:
   VxBSASendData: Failed with error:
channel ch11 disabled, job failed on it will be run on another channel

[Nicolai]

I think you got a robot/tape issue: media id XXXXX load operation reported an error

Check for  :

damaged tape (same scratch tape is selected every time but is never written upon).
read-only tapes
Hardware error on robots (out of calibration)
Tape drive errors (e.g. RW head so dirty it can't read the tape header).

[YAG55]

Thank you,

these are the Virtual tapes of the VTL Falconstor solution
the same tape and the same drive, work correctly for another job

[Nicolai · Accepted solution]

That makes it even more strange, but you need to investigate why you get a mount failure on a VTL tape/drive.

I have seen examples on VOX before where VTL system cause mount issues.

[Amol_Nair]

Is there any error reported in the system logs on the media server?

If the media server is Solaris that would be "/var/adm/messages" 

[YAG55 · Accepted solution]

Thank you
Indeed, the VLT drive that pose the problem.
After deleting the drive, the backup is conclusive.

[YAG55]

thanks for your help