The only time I remember seeing anything like this was when an I/o device would
lose an interrupt and hang but that was many years ago before IBM came up with
MIH. However, that being said the MIH timeout value for tapes is probably
pretty high, in the neighborhood of 15-20 minutes, so you would need to wait
that long to see if the I/O gets re-driven and a missing interrupt is your
problem. You could also try setting the MIH Timeout value for the tapes to a
minute or less and run it again. If that fixes it, I'd contact your tape vendor
to have the drive checked out or see if there is a micro-code fix for the
problem.
You can also do a D U,,,xxx,1 against the tape unit and see if you see the tape
is busy.
Another item to look at is the size of the chkpoint record in case it's small
enough to be considered noise. Not sure if that would cause that kind of
problem, just a another thought.
Bill
> Date: Sat, 17 May 2008 10:31:33 -0400> From: [EMAIL PROTECTED]> Subject:
> Checkpoint job stops processing: Cancel command not working> To:
> [email protected]> > Has anyone ran into this problem or can you tell me
> where to look for a> possible resolution.> > Running z/OS release 1.7.> >
> Payroll jobs that creates checkpoint tapes on real STK 3490 tape drives. >
> Job will process fine to a selected point and stop.> There are no outstanding
> replies to indicate a problem exist.> We issue the Cancel command numerous
> times and the job does not cancel;> therefore, we have to > Force Exit the
> job out of the System.> I have looked thru SYSLOG and cannot find any reason
> as to why the job stopped> processing or why the cancel command is not
> working. It does say Cancel> command accepted. > IEE301I N97P5610 CANCEL
> COMMAND ACCEPTED > > > > > > > > > > >
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