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Diagnosing system hang?

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The Question is:

What in the operating system would cause the operating system itself to
hang?  When I say hang, I mean lock up.  It locks up which therefore it want
create a crash dump file for us to analyze.  We end up having to go down to
the server and restarting it b
ut hitting the reset button.
I have looked at all angles and I am at a loss.

The Answer is :

  Open-ended questions are extremely difficult to answer.
  OpenVMS system hangs can potentially be triggered by hardware
  or software problems, or by various system- or process-level
  configuration problems.
  Please check for relevent error messages on the system console,
  and then (if nothing obvious is indicated) please follow the
  instructions for generating a system crashdump from the system
  console of the particular system, then (after the reboot) check
  the system error log, and then contact the Compaq Customer Support
  Center for assistance...

answer written or last revised on ( 5-JAN-2000 )

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