I get a NullPointException at the save line. public class Test extends HttpServlet { private static final long serialVersionUID = -1L; @EJB private T2Facade t2fl; public void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { T2 t2 = new T2("hello"); t2fl.save(t2); LogUtil.log("t2.getId() = "+t2.getId(),Level.INFO,null); LogUtil.log("t2.getX() = "+t2.getX(),Level.INFO,null); } @Stateless public class T2Facade implements T2FacadeLocal { @PersistenceContext private EntityManager em; public void save(T2 t2) { // em.persist(t2); } @Entity @SequenceGenerator(name="t2_sequence", sequenceName = "t2_seq") public class T2 { private static final long serialVersionUID = -2L; private Long id; private String x; public T2(String x) { this.x = x; } @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "t2_sequence") public Long getId() { return id; } public void setId(Long id) { this.id = id; View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4068216#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...