The matchManagedConnnections method will get called when JBoss attempts to locate a connection from the pool for use. Are you able to acquire a connection from the pool. The JMX console should list your min/max settings which are by default 0 and 10 respectively. Can you look at the JMX console for your pool and tell me what you see? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4022493#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...