Which version of JBoss AS are you using? I found the QuerySyntaxException in common/lib/hibernate-core.jar, so it should be available. Could you post your JAR or EAR file that contains the EJB? Use: "jar -tf xxx.jar" where xxx.jar is the name of your JAR (or EAR) file. Also, is the code that you posted from and EJB3 session bean? If so, where are the entity beans located relative to the session bean? The stack trace suggests that you are attempting to access the entity beans remotely... View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4241579#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...