EntityManager em1 = getEm(emf1, name, value);
assertNotNull(em1);
// 'prove' that we're using a different database by inserting the same row
em.getTransaction().begin();
em.persist(new Person(1, "em"));
em.getTransaction().commit();
em1.getTransaction().begin();
em1.persist(new Person(1, "em1"));
em1.getTransaction().commit();