aix52+tsm54+rman报错

liangliang1718

RMAN-00571: ===========================================================\r\nRMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============\r\nRMAN-00571: ===========================================================\r\nRMAN-03009: failure of allocate command on t1 channel at 12/26/2008 13:41:15\r\nORA-19554: error allocating device, device type: SBT_TAPE, device name:\r\nORA-27000: skgfqsbi: failed to initialize storage subsystem (SBT) layer\r\nIBM AIX RISC System/6000 Error: 2534: Unknown system error\r\nAdditional information: 7011\r\nORA-19511: Error received from media manager layer, error text:\r\n   SBT error = 7011, errno = 2534, sbtopen: system error

liangliang1718

请大虾们帮忙看一下，谢谢！！！