@Entity
@NamedQuery(name = "Man.findAll", query = "select o from Man o")
@Table(name = "MAN")
 public   class  Man  implements  Serializable {
    @Column(nullable = false)
     private   Long  age;
    @Id
    @Column(nullable = false)
     private   Long  id;
     private  String name;

    ... Ну и Геттеры и сеттеры соответственно
}

@Stateless(name="SessionFacade")
 public   class  SessionFacadeBean  implements  SessionFacade, SessionFacadeLocal {
    @PersistenceContext(unitName="Model")
     private  EntityManager em;

     public  SessionFacadeBean() {
    }

    /** <code>select o from Man o</code> */
     public  List<Man> queryManFindAll() {
        List<Man> lst = em.createNamedQuery("Man.findAll").getResultList();
         return  lst;
    }
}

 public   class  SessionFacadeClient {
     public   static   void  main(String [] args) {
         try  {
             final  Context context = getInitialContext();
            SessionFacade sessionFacade = (SessionFacade)context.lookup("SessionFacade");
            List<Man> l = sessionFacade.queryManFindAll();
             for  (Man m: l) 
                System.out.println(m.getId() + " " + m.getAge() + " " + m.getName());
        }  catch  (Exception ex) {
            ex.printStackTrace();
        }
    }

     private   static  Context getInitialContext()  throws  NamingException {
         return   new  InitialContext();
    }
}

@NamedQuery(name = "Man.findAll", query = "select o from Man o")

@NamedQuery(name = "Man.findAll", query = "select o from Man o", hints = {@QueryHint(name = "toplink.refresh", value = "true")})