JNDI (i.e., port 1099) will only perform the lookup on the local server's JNDI bindings HA-JNDI (i.e., port 1100) will search the following until the requested object is located. 1) the cluster's HA-JNDI bindings 2) the local server's JNDI bindings 3) all other cluster servers' JNDI bindings Note that if you create an initial context using HA-JNDI and then bind something via that context, the binding is to HA-JNDI and is replicated across the cluster. HA-JNDI bindings are not visible to JNDI contexts (i.e., port 1099). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059309#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...