anonymous wrote : We are not calling the connection.close() explicitly , but JBoss is trying to call the close connection and throwing the below exception. The CacheConnectionValve is closing the connections for you , the message you are seeing is not the error . org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) If you don't close the connections yourself your application will land up with leaked connections thus making the system unresponsive due to unavailability of the connections. You can remove the CacheConnectionValue configuration from the tomcat service.xml file , but make sure that your application does close the connections properly . http://wiki.jboss.org/wiki/Wiki.jsp?page=CanJBossTellMeWhenIDontCloseACon... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4130015#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...