Mirrowwrite log parallel
1998-07-20 11:57:00
*** Comments From: STEWAJM - Stewart, Mike; 07/20/98 10:40am
Along with the other folk's ADSM server crashes which occurred
last week, mine went down also. Mine wasn't as simple as
a restart, though, and resulted in lost data.
Basically, the MVS Server (3.1 0.2) failed with an 0C1.
When it was restarted it complained about:
ANR0209E Page address mismatch detected
on _both_ the log and mirror log files.
After discussion with ADSM support, I found I had
to run a dsmserv format on the log/db and restore
the db from the latest backup. Since the log was corrupt there
was no possibility of performing a roll-forward recovery, and
a good bit of data which had migrated from disk to
tape was lost.
I have changed my options files from the default:
mirrorwrite log parallel
to:
mirrowwrite log sequential
which I hope will help prevent both the log and log mirrow from
_both_ being damaged in the future.
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