hi Chris,

In your allocate channel command, please put DSMO_DEBUG=49, environment
variable.

   allocate channel t1 type 'sbt_tape' parms 'ENV=(DSMO_DEBUG=49)';


This will create a log file called orcagent.log.  If you have user dump
destination defined, orcagent.log will be there.  Otherwise, it will be in
$ORACLE_HOME/dbs directory.  There should be another log file named
sbtio.log
either under user dump destination directory or $ORACLE_HOME/rdbms/log
directory.  These two logs should tell you what is going wrong with your
backups.

regards,
Thiha


> RMAN backups have been working well for 3 months..... but 3 days ago they
> just stopped working. Of course, "nothing has changed". ADSM is calling
the
> RMAN script with no problems, sees communication from the RMAN node
> correctly, and records the completion of the RMAN commands correctly with
no
> problems.
>
> But the client end shows RMAN failure messages like:
>         RMAN-10035 operation failed
>         ORA-19506 failed to create sequential file
>         ORA-27006 sbtremove returned error
>
> The last two Oracle describe as backup storage operation failures.
>
> Is it a problem at the RMAN end, or at the ADSM end?? ADSM V3.1.2.20
>
> We have tried the backup interactively - same problems.
> We have switched the RMAN backup from allocating an ADSM channel to
> allocating a disk - and the backups completed successfully.
> What should we now do to ADSM??
>
> Cheers, Chris