Man, it could sounds stupid but you close every connection? I have a similar problem and my app was using more than one datasoure, at end I don close every connection (for each datasorce)... so the problem of ManagedConnection arise. ... | } finally { | if (pstmYY != null) pstmYY.close(); | if (pstmXX != null) pstmXX.close(); | if (connAA != null) connAA.close(); | if (connBB != null) connBB.close(); | } | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3968765#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...