一客户TSM备份失败，报如下错误：
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on t1 channel at 07/08/2009 03:04:12
ORA-19502: write error on file “bk_9060_1_691642987″, blockno 1 (blocksize=512)
ORA-27030: skgfwrt: sbtwrite2 returned error
ORA-19511: Error received from media manager layer, error text:
ANS1312E (RC12)   Server media mount not possible

一客户在用TSM备份 oracle 时经常报如下错误：
04/09/2009 07:45:43 PM   
      ANE4994S (Session: 836, Node: SZ-DB-SRV)  TDPO LinuxAMD64
      ANU0599 TDP for oracle : (12823): =>(SZ-DB-SRV) 
      ANU2602E  The object /sz-db//c-3379378948-20090409-00 was not found  on the TSM Server (SESSION: 836)
04/09/2009 09:11:17 PM 
      ANE4991I (Session: 837, Node: SZ-DB-SRV)  TDPO LinuxAMD64
      ANU0599 TDP for oracle : (12823): =>(SZ-DB-SRV) 
      ANU2535I File /sz-db//c-3379378948-20090409-00 = 56623104 bytes  sent (SESSION: 837)