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 20:30:29 +1100
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It is taking me around two hours to recover from each system abort and that
time is viewed by my manglement as excessive.  (MVS people get that way)  I
have only
moved our production system to MPE/iX 5.0 a week ago and so far we have had two
system aborts, one system hang and we mislaid two of our three processors on a
reboot.
 
Breaking the time down a bit further the big problem seems to be composed of
a few
small problems.
 
(1)  It takes around 30 minutes to reboot an Emerald on the best of days.
It is
     one of the slowest beasts in the HP firmament.
 
(2)   Dump to disc is still real slow and takes another half hour to toss a
dump on
      to two SCSI discs.
 
(3)   Being ultra cautious, I had set our databases to Mustrecover and use
DBRECOV
      rather than using dynamic roll back recovery to recover our databases.
This
      seems to take another 45 minutes.
 
I have already asked for guidence concerning database recovery but I guess I
still
need to cut down on the time taken to prepare a dump for HP.  Would using DDS 2
drives be faster than using the 2 gb SCSI disc drives?
 
Thanks for any suggestions on improving this time.
 
Regards
 
Bryan O'Halloran

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