Hi Friend, May be this information could help us to find the solutions. we only have 100 Max connection pool in this file defined, should we increase this coz as i already said before, we have more than 250 users at a time(concurrent). ----------------------------------------------------------------- /server/default/deploy/jbossjca-service.xml ------------------------------------------------------------------ <!-- The name that appears in thread names --> WorkManager <!-- The maximum amount of work in the queue --> 1024 <!-- The maximum number of active threads --> 100 <!-- How long to keep threads alive after their last work (default one minute) --> 60000 ------------------------------------------------------------------------------- if you need any information, plz don't hesitate to ask . thanks. Milan Gothe View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4174641#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...