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MQSeries.net Forum Index » General IBM MQ Support » Circular logging

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Query2
PostPosted: Wed Nov 28, 2001 10:15 am    Post subject: Reply with quote

Novice

Joined: 05 Nov 2001
Posts: 17

What happens when there are too many long running transactions and you are using circular logging?
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kolban
PostPosted: Wed Nov 28, 2001 10:31 am    Post subject: Reply with quote

Grand Master

Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA

I believe that no new transactions can start, possibly old transactions are rolledback and/or the queue manager shuts down. Best advice is not to let this happen and size the logs for maximum. In practice, short of an application code problem, I rarely see this happen.
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bduncan
PostPosted: Thu Dec 06, 2001 10:40 am    Post subject: Reply with quote

Padawan

Joined: 11 Apr 2001
Posts: 1554
Location: Silicon Valley

I would disagree, in that I've seen this problem a LOT when there wasn't anything wrong with the application; instead, the queue manager had an insufficient number of circular logs available. So even a properly coded app would cause these errors under heavy load (especially when multiple copies would run in parallel)....

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