we have exception like this: "org.hibernate.TransactionException: JTA commit failed". it looks like the two transaction commit caused this problem. Does anyone have a good solution for this please?

in our code, we have

try {
.....
session = HibernateFactory.createSession();
tx = session.beginTransaction();
....

if (elementdetail.getElementid().startsWith("AD_")) {
session.saveOrUpdate(elementdetail);
tx.commit();
}

...
elementapppreferred.setNotes(elementDetails.getNotes());

if (!elementdetail.getElementid().startsWith("AD_"))
session.clear();
session.saveOrUpdate(elementapppreferred);

} catch (Exception e) {
e.printStackTrace();
if (tx != null) {
tx.rollback();
}