CMTTransactionFactory and JTATransactionFactory with Hibernate in JBoss EAP 6

Issue

• When should hibernate.transaction.factory_class be set to org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory?
• When should hibernate.transaction.factory_class be set to org.hibernate.transaction.JTATransactionFactory?
• What transaction factory should be used by an application which uses both CMT and BMT (using UserTransaction)?
• What transaction factory should be used if using Hibernate to start transactions?
  • entityManager.getTransaction().begin()
  • session.beginTransaction()