hi,

When you do incremental backup, Oracle has to scan through the data block
to figure out which blocks are changed.  If there isn't much change in the
database, it takes a while until Oracle finds some changed blocks.  On TSM
server, if your commtimeout value is set to a low value, and your sessions
are idle for commtimeout value while Oracle is still looking for the
changed blocks, your session will be canceled from the server.  It looks
like you are running into this situation.  Please increase your commtimeout
value on the server to a value like 1000.

regards,
Thiha

>The level 0 backup ran fine, but now the DBA is trying to get level 1
backups,
>and she keeps erroring out. She starts 3 threads. The first two go to
idlewait
>then die, the third one seems to be succeeding until the whole process
dies.