Hi guys, thanks for the suggestions.
@paulgale My understanding is that if we are using a simpleMessageGroupMapFactory, we don't have a limit of the message groups: <messageGroupMapFactory> <simpleMessageGroupMapFactory/> </messageGroupMapFactory> So could that be the problem still, we also don't see a huge memory usage in the broker so it's definitely not leaking there. -- Sent from: http://activemq.2283324.n4.nabble.com/ActiveMQ-User-f2341805.html