Hello, we have a test case where messages are not paging. We're using: - A cluster of two nodes - JBossAS 4.2.1 - JBossMessaging 1.4.0.SP2 - MySQL 5.0.45 we have a mbean that sends a large number of messages to a clustered queue with FullSize=4000. And we have deployed a MDB that receives messages from this queue, with a sleep of 100ms (so that it doesn't consumes messages very fast) If we send 100000 non-persistent messages, we see both nodes processing messages, but there's no mysql activity, and JBM_MSG* tables are empty, so messages are not paging. In the JMX console we monitor the queue and we see MessageCount=DeliveringCount=90K messages. Seeing the source of ChannelSupport, it seems messageRefs.size() == 0. Because this is the number it compares to FullSize, it will not page any message to DB. I can attach the test case if you need Thanks in advance, Isaac View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4113377#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...