Wolf-Dieter Fink [https://community.jboss.org/people/wdfink] created the discussion "Re: java.lang.IllegalStateException: A JTA EntityManager cannot use getTransaction()" To view the discussion, visit: https://community.jboss.org/message/756438#756438 -------------------------------------------------------------- In your Bean you have only the annotation +@Stateless+ in this case the transaction is container managed (CMT). If you want to control the Tx demarcation you should add +(a)TransactionManagement(TransactionManagementType.BEAN)+ + + If you want only a Tx for your method I recommend to use CMT and add +(a)TransactionAttribute(TransactionAttributeType.REQUIRED)+ in that case the container will do all the work. Your method can be look like:     @Override     *public* *void* savePrivato(String nome , String cognome) {         Privato pr = *new* Privato();         pr.setNome(nome);pr.setCognome(cognome);         em.persist(pr);         System.out.println("Utente Salvato");     } -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/756438#756438] Start a new discussion in Beginner's Corner at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]