"henk53" wrote : | Just wondering, are JNDI lookups really that expensive? When looking up an EJB (either programmatic, or via injection), isn't there a JNDI lookup happening all the time? Yes, but you need to understand that there is a trade-off between the efficiency and flexibility(loosely coupling). You should be talking at EJB forums for the EJB details, you can get more help there. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4259539#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...