Hello, We are currently migrating from WebSphere to JBoss. The EAR contains 64 EJB 2.1 projects. We don´t want migrate to EJB3 in the next time. Anyway, do we have to make JAVA code changes (annotations) although we use EJB2.1? At the Jboss server start I run into this error: 10:39:04,000 ERROR [StandardContext] Context [/sw] startup failed due to previous errors java.lang.RuntimeException: mapped-name is required for jdbc/myDatasource of deployment myWeb.war ... But mapped names are only for EJB3, right? Please help Thanks! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4197618#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...