Problem in SAP Backup DB13

[Former Member]

Hi,

After kernel upgrade we tried to take offline backup through DB13, before going with the SAP upgrade.

But, Now we are facing backup problem through DB13 while initializing the tape.

OS: Windows 2003

DB: Oracle 10.2.0.2

Kernel Release : 46D

Kernel Version: 46D_EX2 Path level: 2571

Machine: IA64

Log:

Job started

Step 001 started (program RSDBAJOB, variant &0000000004646, user name ZADMIN1)

Execute logical command BRBACKUP On host AP-CHE-SAP-02

Parameters: -i force -c force -n 1 -v SCRATCH

BR0051I BRBACKUP 7.00 (13)

BR0055I Start of database backup: behjlsyp.tib 2011-12-06 11.37.43

BR0205I Backup volume initialization

BR0058I BRBACKUP action ID: behjlsyp

BR0059I BRBACKUP function ID: tib

BR0102I Following backup device will be used: /dev/nmt0

BR0131I All volumes get the name SCRATCH

BR0129I Force option set - no label checking during initialization

BR0134I Unattended mode with 'force' active - no operator confirmation allowed

BR0207I Volume in device: /dev/nmt0 will be initialized with name: SCRATCH

BR0280I BRBACKUP time stamp: 2011-12-06 11.37.43

BR0226I Rewinding tape volume in device /dev/mt0 ...

BR0278E Command output of 'mt -f /dev/mt0 rewind mt -f /dev/mt0 rewind mt -f /dev/mt0 rewind':

mt: opening '/dev/mt0': The system cannot find the file specified.

mt: opening '/dev/mt0': The system cannot find the file specified.

mt: opening '/dev/mt0': The system cannot find the file specified.

BR0280I BRBACKUP time stamp: 2011-12-06 11.37.43

BR0279E Return code from 'mt -f /dev/mt0 rewind mt -f /dev/mt0 rewind mt -f /dev/mt0 rewind':1

BR0213E Winding tape volume in device /dev/nmt0 failed

BR0219E Initialization of volume SCRATCH in device /dev/nmt0 failed

BR0206I End of backup volume initialization

BR0280I BRBACKUP time stamp: 2011-12-06 11.37.43

BR0054I BRBACKUP terminated with errors

External program terminated with exit code 3

BRBACKUP returned error status E

Job finished

Note: We tried NT Level Backup, it was successfully.

Please help us to resolve the issue.

Regards,

Bharathi

[former_member188883]

Hi,

opening '/dev/mt0': The system cannot find the file specified

Can you check whether the tape address /dev/mt0 is mapped properly to the server. Also ensure you have tape device at this location.

you can verify the same using the command

mt -f /dev/mt0 status

If this returns the block size of the tape device , it implies you have mapped the tape address properly and tape device exists in proper locaiton.

Hope this helps.

Regards,

Deepak Kori

[Former Member]

Dear Deepak Kori,

Thanks for the support.

I tried this command it shows,

C:\Documents and Settings\dv1adm>mt -f /dev/mt0 status

mt: opening '/dev/mt0': The system cannot find the file specified.

Also, please suggest us how to verify the tape address /dev/mt0 is mapped properly in the server?

Regards,

Bharathi

[former_member188883]

Hi,

The command which i mentioned above will check for correct tape address mapping as well.

Additionally you can check initSID.sap file for the tape address configured for backup and rewind process.

If the tape address seems to be correct, ensure that you have new tape in the address specified.

Hope this helps.

Regards,

Deepak Kori

[Former Member]

Dear Deepak Kori,

Thanks, I pasted the init file for your reference. Seems to be correct.

init<SID>.sap:

1. address of backup device without rewind

2. [<dev_address> | (<dev_address_list>)]

3. no default

4. operating system dependent, examples:

5. HP-UX: /dev/rmt/0mn

6. OSF1: /dev/nrmt0h

7. AIX: /dev/rmt0.1

8. SINIX: /dev/ios0/rstape005n

9. SUN: /dev/rmt/0mn

10. NT: /dev/nmt0

tape_address = /dev/nmt0

1. address of backup device without rewind used by brarchive

2. default: value of the tape_address parameter

3. operating system dependent

4. tape_address_arch = /dev/nmt0

1. address of backup device with rewind

2. [<dev_address> | (<dev_address_list>)]

3. no default

4. operating system dependent, examples:

5. HP-UX: /dev/rmt/0m

6. OSF1: /dev/rmt0h

7. AIX: /dev/rmt0

8. SINIX: /dev/ios0/rstape005

9. SUN: /dev/rmt/0m

10. NT: /dev/mt0

tape_address_rew = /dev/mt0

Even also the same problem occurs and tried with the new tape too, pls help us.

Regards,

Bharathi

[Former Member]

Hi

Please help...

Regrads,

Bharathi

[former_member188883]

Hi,

Refer SAP Note 104719 - NT: Problems with MT.EXE (BRBackup error: mt: ...)

Hope this helps.

Regards,

Deepak Kori