Got same problem with MSSQL and Derby on Glassfish. Booking conformation action handler (HotelBookingAction.confirm method) invokes BookingListAction.getBookings method to update bookings list used in main page after inserting new booking to DB: | // HotelBookingAction.java | @End | public String confirm() | { | if (booking==null || hotel==null) return "main"; | em.persist(booking); | facesMessages.add("Thank you, #{user.name}, your confimation number for #{hotel.name} is #{booking.id}"); | log.info("New booking: #{booking.id} for #{user.username}"); | events.raiseEvent("bookingConfirmed"); | return "confirmed"; | } | | // BookingListAction.java | @SuppressWarnings("unchecked") | @Factory | @Observer("bookingConfirmed") | public void getBookings() { | bookings = em | .createQuery( | "from Booking b where b.user.username = :username order by b.checkinDate") | .setParameter("username", user.getUsername()).getResultList(); | } | | | BookingListAction is annotated with @TransactionAttribute(REQUIRES_NEW). That's why deadlock. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3960499#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...