Salam,
I think that this problem happens when there are no more scratch tapes in your
Storage Pool. There may be alot of scratch tapes in the
library but only a particular number of them has been assigned to the storage pool to
which your node is defined.
To do a quick check: do a q stg storage_poolname f=d and look for the parm maximum
number of scratch tapes and then
do a q vol stg=storage_poolname and count the tapes in the pool. If the limit has
been reached then increase the maximimum number of
scratch limit in the pool by issuing update stg storage_poolname maxscr=xxx :where xxx
is the number of tapes allowed in the pool.
Hope this helps.
Mansoor