JTA UserTransaction rollback does not work

[Olga Wsdf]

I try to describe my environment shortly. Technologies: EJB 3.1, JSF, JBoss 7.1.1

There are Servise-classes (@SessionScoped @Stateful). Servise-classes call Dao classes (@Stateless)

I want :
- use EntityManager only into @StateLess beans (Dao)
- have short transaction in most cases (like persist, merge)
- have one long transaction for some multistep-methods (methods are in Dao also)
- have actual (up to date, without first-level cache) data[

I have: Pesistense.xml

    <provider>org.hibernate.ejb.HibernatePersistence</provider>

    <jta-data-source>java:jboss/datasources/MydataSource</jta-data-source>
    <properties>
        <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
    </properties>
</persistence-unit>

Dao

@Stateless
@TransactionManagement(TransactionManagementType.BEAN)
public class UserDaoBean implements UserDAO, Serializable {

    @PersistenceContext(name = "MyEntityManager")
    private EntityManager em;

     @Override
     @Transactional
 public void update(User user) throws Exception {
        User tmpUser = getUser(user.getUser());
       //some code, should be rollback, if it is an exception
        em.persist(tmpUser);

    }

Transaction interceptor
@Transactional
@Interceptor
public class TransactionInterceptor implements Serializable {


    @Resource
    private UserTransaction userTransaction;

    @AroundInvoke
    public Object verifyAccess(InvocationContext context) throws
            Exception {
        Object result = null;

        try {
            userTransaction.begin();
            result = context.proceed();
            userTransaction.commit();
        } catch (Exception e) {
                userTransaction.rollback();
             throw new CustomRuntimeException(e.getMessage());
        }

        return result;
    }

}

Problem: If it is throw an Exception into Dao method, part data will save in DB instead of total rollback.

I think, is need Join Transaction to EM. Or disconnect persists each item to the DB right away (using cache). I've try different ways, but didn't have success.

Thanks for in advance!