Hi Guyz, I am using jboss-4.0.3. i am experimenting with DAO patterns i wrote a program which handels all DB related operations like add, update, delete etc., For any DB operations i am unble to get the success. i am always ending with the exception stack trace. UserDao is my Class name createUser is my method name 14:24:13,764 ERROR [UserDao] >>>>>>>>>> SQLException In UserDao.createUser() java.sql.SQLException: Connection handle has been closed and is unusable at org.jboss.resource.adapter.jdbc.WrappedConnection.checkStatus(WrappedConnection.java:526) at org.jboss.resource.adapter.jdbc.WrappedConnection.checkTransaction(WrappedConnection.java:513) at org.jboss.resource.adapter.jdbc.WrappedConnection.prepareStatement(WrappedConnection.java:169) if anybody got the solution. plz let me know it would realy boost my task. i am getting a separate connection for each and every opperation and closing that connection after compleetion. is this the right way of getting a new connection for each new opperation. or can i maintain a single connection for all the operations plz let me know. Thanks Phani.Chavala View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4075141#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...