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To: activemq-users@geronimo.apache.org
Subject: Inaccessible Messages in Queue
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From: tony.x.rippy@jpmchase.com
Date: Wed, 6 Dec 2006 15:41:43 -0500
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Hello,

I'm seeing a strange issue with ActiveMQ 4.0.2. We have a single process 
that generates messages and sends them to a queue. There are several 
hundred client processes that consume messages from this queue. I have set 
the queue prefetch policy of the client connections to 1, 
useRetroactiveConsumer = true, maxInactivityDuration = 0. I'm using a 
non-transacted auto-acknowledge session with the MessageConsumer. 

Every now and then we get what appears to be a "lost" message. The clients 
are unable to pull any more messages off the queue, but JConsole/JMX is 
reporting that there is 1 message still available. Using the browseAsTable 
operation I'm able to inspect the message, but nothing seems out of the 
ordinary. 

Has anyone seen a situation like this before? Any suggestions of what I 
could do to prevent this from happening?

Thanks in advance,

Tony


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