Hi, Whenever we restart the database, we require to restart the JBoss AS to retain its expected behavior. In order to avoid this problem we can have some configurational settings like using ValidConnectionChecker interface or <check-valid-connection-sql> element in *.ds.xml, as specified in the url http://wiki.jboss.org/wiki/Wiki.jsp?page=WhatHappensToJBossIfIRestartTheD... But there is a significant performance degradation in our application after using either of these approaches. Do we have any other alternative approach to handle this situation where performance will not be impacted drastically? Thanks. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965982#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...