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MQSeries.net Forum Index » General IBM MQ Support » Fuzzy backups

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blowbeat
PostPosted: Thu Nov 28, 2002 5:51 am    Post subject: Fuzzy backups Reply with quote

Apprentice

Joined: 02 Apr 2002
Posts: 49

Hi,

I'm trying to see if I have worked this out correctly. Any comments are welcome....

When using fuzzy backups on OS390, the lowest RBA needed from the logs at recovery time should be on the DISPLAY USAGE output, msg CSQI024I.
Now, if there would be any long running transactions basically, I think the low RBA for these transactions could actually be LESS that the RBA shown on CSQI024I.
So, I should not only look at the output of DISPLAY USAGE but also DISPLAY THREAD(*).
Unless, this (incomplete units of work) is taken care of during a checkpoint in which case I can force a checkpoint with an ARCHIVE LOG command.

Also, it would explain the different approaches described in MD16 and the redbook SG24-5222 would in the end produce the same result.

Actually, since on Unix (and other platforms) there's no DISPLAY THREAD, I think I have no other choice than trusting the information on the message AMQ7268.

Thanks, Jan.

(Yet another duplicate of the MQ Listserv...still.. )
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