I am testing an EJB3.0 application ih JBOSS hosted in Linux machine It simply calls a business method 100 times. The business method simply inserts some JMS messages in the well defined queues. The MDB is attached with each queue and each MDB call a local business method which simply update the database table based on the input passed to it. My problem is that everything going fine but JBOSS starts throwing exception after few minutes of starting of the my J2EE application with following error message:- “ Failed to setup client connection java.net.SocketException: Too many open files” when such exception occurs, The EJB deployed in the sever is stopped to take any new request from client and same exception "Too many open files" is thrown in JBOSS console . Is there some configuration is requited at OS or JBOOS level to execute heavy J2EE application in the JBOSS. Can any help me to guide what I need to configure to avoid " too many open files exception" in the JBOSS. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4131756#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...