HP3000-L Archives

November 1995, Week 4

HP3000-L@RAVEN.UTC.EDU

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Subject:
From:
Bryan O'Halloran <[log in to unmask]>
Reply To:
Bryan O'Halloran <[log in to unmask]>
Date:
Mon, 27 Nov 1995 20:30:26 +1100
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I need to institute Dynamic Rollback Recovery for my databases because it is
taking me two hours to recover from a System Abort and I need to shorten the
time dramatically.  I will set out the steps which cause this long lag in
another message.
 
I have not yet enabled my databases for DBX... stuff because of statements like
the following
 
"If your dynamic transaction is very long causing XM to reach its limit of the
log buffer space allowed per process, it will become a stalled transaction,
and you cannot continue any further.  The stalled transaction will be rolled
back and the process is terminated."
 
Can someone with experience of a medium size HP3k (300 to 400 users) advise if
dynamic rollback recovery will work in practice or should I continue being ultra
cautious.
 
What other bits of the equation have I left out of the question.
 
T.I.A.
 
Bryan

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