In weblogic-ejb-jar.xml ,The pool element configures the behavior of the WebLogic Server free pool for stateless session and message driven EJBs. The options are:
             * max-beans-in-free-pool              * initial-beans-in-free-pool ExampleThe pool stanza can contain the elements shown here:<stateless-session-descriptor> <pool> <max-beans-in-free-pool>500</max-beans-in-free-pool>
<initial-beans-in-free-pool>250</initial-beans-in-free-pool> </pool></stateless-session-descriptor>