我遇到一个很奇怪的问题：昨天DB13无法成功执行LOG备份，也无法执行磁带初始化（不管将磁带的卷标设为什么，都提示该卷标已被使用，按正常情况对应的磁带卷标应为B2），在命令行里执行BRARCHIVE也一样。这个问题在28天前也遇到过（我们的备份策略是7*4，四周前用的也是B2这个磁带）。而今天呢，初始化磁带，只要卷标不设为B2，都可以成功。
到底问题出在哪里呢？


SAP46C+DB2+AIX433

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dwh80:gdaadm 1> brarchive -i force -v b2 /dev/rmt0 -out
Start time: 20041117102007
Initializing.
--------------------------------------------------
brarchive  46D  Patch 9
--------------------------------------------------
Command line:
    brarchive -i force -v b2 /dev/rmt0 -out
--------------------------------------------------
Parsing command line arguments.
Getting environment values.
SAP SYSTEM NAME (SID)  ="GDA".
SAP DB NAME (DB2DBDFT) ="GDA".
Setting defaults where needed.
No node specified on command line. Assuming 'NODE0000'.
[W] LFA010: Using implied value: -d/-device not specified but tape implied.
Tape device 1 = /dev/rmt0 (From Admin DB, as not explicitly given).
Checking arguments and env. values.
Starting action
Setting program lock
Loading backend library.
Opening session with backend.
   Getting tape information (/dev/rmt0.1) ...
[E]   ... failed
Tape 1:      VOLUME = <VOID>.
[E] LFA168: Usage error: Volume name "b2" used on other tape. Use new name or re
-initialize old tape.
[E] LFA154: Error: Error preparing for operation.
Action completed.
[E] LFA151: Error: Action failed.
Cleaning up.
End time: 20041117102008
Terminating. RC = 5.

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