Hi, looks like JBoss is closing a hibernate connection for me, which is not good. The solution seems to be on http://www.jboss.org/community/wiki/ConfigCachedConnectionManager but it does not apply for JBoss 5.1. How do you get around the problem for JBoss 5.1 ? Thanks, Juergen 7:27:02,076 INFO [CachedConnectionManager] Closing a connection for you. Please close them yourself: org.jboss.resource.adapter.jdbc.jdk6.WrappedConnectionJDK6@41d1d3 java.lang.Throwable: STACKTRACE View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243751#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...