public void run() {
   logger.trace("Thread ID : " + Thread.currentThread().getId());
   
   Session session = hibertest.sessionFactory.openSession();
   Transaction transaction = session.beginTransaction();

        //load the first record
      Device devRef = (Device) session.load(Device.class, new Integer(1));

        //modify just one field
   devRef.setModel(model);
   try {
       Thread.sleep ( tSleep );
   } 
   catch ( InterruptedException e ) {
   }

   transaction.commit();
   session.close();

   logger.trace("Thread ID  out : " + Thread.currentThread().getId());
    }