Hello Tim, thanks a lot for your reply.
Yes, a different prefetch size changed the number of waiting messages: the smaller the size, the smaller the number of waiters. E.g. prefetch size 20 made 19 messages waiting, 2 made 1 waiting. A prefetch size 0 had the effect that no Message was delivered to my MDB. I think having 4 Consumers instead of 1 Consumer with bean-pool size 4 and using prefetch size of 1 would solle the problem, but I would have to duplicate my MDB three times, right? Best regards, Marc -- View this message in context: http://activemq.2283324.n4.nabble.com/Glassfish-3-1-2-ActiveMQ-5-9-0-MDB-Long-lasting-Message-blocks-other-Messages-tp4696328p4696541.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
