在遗留代码中,我解决了嵌套事务的问题。(Spring、CDI等不能仅用于纯JPA(EclipseLink))
em.getTransaction().begin();
em.persist(client);
em2.getTransaction().begin();
em2.persist(client1); //saved into DB
em2.getTransaction().commit();
em.getTransaction().rollback();
public void method(){
EntityManager em = enti