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MQSeries.net Forum Index » General IBM MQ Support » Dead Letter Queue question....

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csmith28
PostPosted: Tue Mar 09, 2004 4:55 pm    Post subject: Dead Letter Queue question.... Reply with quote

Grand Master

Joined: 15 Jul 2003
Posts: 1196
Location: Arizona
I was looking at /var/mqm/logs/QMMgr/active the other day and it appears that the person has set the maximum number of rotating logs to fortyseven each just over 4meg. So so I have roughly 188meg before messages start being thrown into the Byte Bucket.

The thing that bothers me is the MAXDEPTH of the SYSTEM.DEAD.LETTER.QUEUE is 999999999. What I am wondering is, Persistant messages placed on the Dead Letter Queue get written to the logs?

In other words if I get 188 or more 4meg messages placed on my SYSTEM.DEAD.LETTER.QUEUE will it fill up my log space and potentially start deleting messages being processed by other Queues and channels?
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jefflowrey
PostPosted: Tue Mar 09, 2004 4:56 pm    Post subject: Reply with quote

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Joined: 16 Oct 2002
Posts: 19981
I believe messages are only in the logs while they are in motion.

Once they're "on" the queue, then they're in the data files, not the log files.
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kman
PostPosted: Wed Mar 10, 2004 12:01 am    Post subject: Reply with quote

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Joined: 21 Jan 2003
Posts: 309
Location: Kuala Lumpur, Malaysia
It will start filling up your log space if you have a long running unit of work, and you did not service the messages. Also you did not clear the inactive logs away.. in the case of linear log.
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