Hello Brian, I got the j2ee-1.4-doc-tutorial from Sun, the jbossj2eesrc.zip and jbossj2ee-clustering14 from JBoss (http://docs.jboss.org/jbossas/getting_started/...). The example without the clustering-extensions is running very well. The deployment of the clustering demo was OK, but I cannot logging in, because of the error. Where can I get a demo application for looking how clustering in JBoss is working, because we want to use it in a production environment? Are there any more guides available which show what I have to change in applications to make them running in cluster enviroment (I have read the admin-guide and getting started guide)? thanks delta296 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3975336#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...