Hi, I am using ActiveMQ 5.2 with XA transactions using ActiveMQXAConnectionFactory and the Bitronix transaction manager. When there are many messages in the queue (about 200000) and I try to read them all (in chunks of 1000 messages per transaction), I often get the exception "javax.jms.JMSException: Unmatched acknowledege" in the ActiveMQ log file. In my application, I receive a null message and duplicate messages are delivered after some time. Moreover, reading the messages slows down significantly and drops to below 1 message per second after some time.
I already created a bug report with a more detailed description and a test case under https://issues.apache.org/activemq/browse/AMQ-2161. Has anybody else seen a similar behaviour or already has a bugfix or workaround? Cheers, Michael
