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From Torsten Mielke <>
Subject Re: How to unlock a queue?
Date Tue, 04 Dec 2012 10:29:42 GMT
This should not happen. 
If you enable debug logging in the broker, you should see that the transactions is rolled
back when the client disconnects as part of killing it.
Other consumers should still have access to the destination and should be able to consume

Can you check using jconsole that the consumer is unregistered from the destination DATA after
killing it? 


Torsten Mielke

On Dec 4, 2012, at 10:23 AM, rafiki wrote:

> I have the next situation:
> + An ActiveMQ stand alone Broker.
> + A JMS message producer sending 1MB message to a queue named "DATA" in a
> non transactional mode.
> + A JMS message consumer reading in transactional mode from the same queue.
> The consumer reads a message and then write it to a file. If it is written
> ok then make a commit, if not, rollback.
> I try to make a failure test, so when producer and consumer are working, I
> kill the consumer process. ActiveMQ displays in log a Warning about a
> "EOFException", and the queue is blocked. I can't write or read more message
> using this queue. I have to delete the queue in order to continue using it, 
> with the consequent loss of data.
> I reproduce this scenario with ActiveMQ 5.7.0, 5.5.1 and 5.4.3. I search in
> google about this problem, but i don't find a way  to unlock the queue. Any
> idea?
> My O.S. is Debian "Wheezy" under VirtualBox, and working under OpenJDK
> version 1.6.0_24
> Thanks in advance
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