tsm备份 ANS1312E (RC12) Server media mount not possible

用tsm进行备份，发生错误如下:
BKI5008E: Tivoli Storage Manager Error:
ANS1312E (RC12)   Server media mount not possible
BKI1231E: Maximum number of retries for file /oracle/QAS/sapdata3/undo_1/undo.data1 exceeded.

查询相关信息如下：
>q path

Source Name	Source Type	Destination Name	Destination Type	On-Line
TSMSERVER	SERVER	LB0.1.0.5	LIBRARY	Yes
TSMSERVER	SERVER	MT0.0.0.4	DRIVE	Yes
TSMSERVER	SERVER	MT0.0.0.5	DRIVE	Yes

>q drive

Library Name	Drive Name	Device Type	On-Line
LB0.1.0.5	MT0.0.0.4	LTO	Yes
LB0.1.0.5	MT0.0.0.5	LTO	Yes

>q mountANR2034E QUERY MOUNT: No match found using this criteria.
q mount时报错如上因为接触tsm不多，所以请大家多指导，多谢了！收起