"alchemista" wrote : I would expect that if the connection is closed by the pool, I should get an error after the delay completes. | | Any ideas what is going wrong? The connections which are not inuse for idletimeout periods will be removed , the connections in your case is being held by the application code . Search the jboss wiki / google to get more details about idletimeout feature . View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4157992#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...