Not if you do have 50 concurrent users. The connection is only returned to the pool when you close it. This obviuosly means it is not used anymore. Connection pooling will not give you any kind of multiplexing of database access. This is not possible due to the fact that database transactions are bound to a certein connection. Regards Felix View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4025356#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...