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From Ron Reynolds <>
Subject ActiveMQ 5.2 - broker stops sending messages
Date Mon, 23 Mar 2009 19:53:05 GMT
i know it's a vague subject line and i'm almost certain it's been asked before but i'm under
a tight deadline on a near-production system and i need help.  the situation is this:

- single broker (5.2) with only 4 queues (not topics) 
- default broker config with prefetchPolicy.queuePrefetch=0 added to broker's connection pool
brokerURL attribute
- single client using failover URL (in anticipation of a second broker once the system is
- client using Spring-JMS.  
- client-ack, small messages, 7-second retry on the client, using PooledConnectionFactory
wrapped around ActiveMQConnectionFactory  
- no transaction management added.  
- both client and server are Linux (CentOS 5.x i think) w/ Sun JVM 1.5.0_11.

the situation is that the system, after running well for an hour or more (typically not more
than 24) it will suddenly stop sending notification to the client of new messages in one of
the queues (need for it to repro to test if it happens for other queues).  a QueueBrowser
shows the messages just fine, but a receiveMessages() with null selection criteria times out
before any messages are returned.  i'm able to insert new messages into the queue but the
client still gets no notification.

another developer is currently looking at OpenMQ or other JMS implementations to avoid this
issue but it has to be a config issue, yes?  

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