JBoss AS 5.1 Servlet code: public class Servlet extends HttpServlet { | | @PersistenceUnit | private EntityManagerFactory emf; | | I created a persistence.xml file and included it a separate EJB .jar file in a .ear file. Things were working fine until I added some EJBs in the persistence.xml containing .jar, and this error started coming up: | 11:34:43,802 ERROR [StandardContext] Context [/mlp] startup failed due to previous errors | java.lang.IllegalArgumentException: Container org.jboss.web.tomcat.service.TomcatInjectionContainer@1662fdd failed to resolve persistence unit null | at org.jboss.injection.PersistenceUnitHandler.addPUDependency(PersistenceUnitHandler.java:135) | at org.jboss.injection.PersistenceUnitHandler.loadXml(PersistenceUnitHandler.java:75) | Is there some reason the persistence unit is "lost" when EJBs are declared within the same .jar file? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4256063#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...