James B. Byrne <[log in to unmask]> wrote:
 
<snip>
>1.      This job is the only active process on the system
>besides the OS itself.
>
>2.      Ejecting the DAT and putting a new one in has often
>caused the job to start normally. (I can't say always but it may
>be the case)
>
>These two items have focused my suspicions on the HP1511A unit.
 
I think your suspicions are correct.
We had our 1501A unit replaced twice last year on our 922LX running MPE/iX
4.0 due to this same annoying problem, (and it stared creeping up on us
again for the third time). At first I suspected power failures as well, but
it did not make sense to me. Never got satisfactory explanation from RC on
this. Luckily, it never happend on our second machine - 937 with HP1503B unit.
 
Have you checked Predictive? When this irregular problem occurs, its' PSLIST
produces something like this:
 
INFORMATIONAL(RC) - 11:01 PM, 02/09/96 - Pdev 4.5.3:HPC1501-HPC1511(05)
      Device Reject. S0=%5413:S1=%100100:LOG0845:X000.
 
Do you get similar message? Anyone with suggestions?
 
Damir
 
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