JPA EclipseLink - Does not update entity

I have a relationship in Client JPA 1 - > 0 .. * Loans. So I have in the client class a List Loan set to do OneToMany. It turns out that when I add a client it updates the normal client list, however when I add a loan it does not update the List loans I have inside clients. Only after restarting tomcat does it update the Loans list.

I have to add the direct loan in the List and give a persiste in the client?

At the moment I'm giving a direct persistence in the loan class.

@Entity (name="cliente")
public class ClientePOJO {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;
    private String nome;
    private String sobrenome;
    private String rg;
    private String cpf;
    @Transient
    private String nascimentoString;
    @Temporal(TemporalType.TIMESTAMP)
    private Date nascimento;
    private String telefoneResidencial;
    private String telefoneCelular;
    private String endereco;
    @Transient
    private String icon = "ui-icon-blank";


    @OneToMany(fetch=FetchType.LAZY, cascade=CascadeType.ALL, mappedBy="cliente")
    @JoinColumn(name="cliente_id")
    private List<EmprestimoPOJO> emprestimos;

Client Persistence:

public static boolean adiciona(ClientePOJO novo){
        try{
            factory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
            EntityManager em = factory.createEntityManager();
            em.getTransaction().begin();
            em.persist(novo);
            em.getTransaction().commit();
            System.out.println("Dados Gravados com Sucesso");
            return true;
        }
        catch (Exception e){
            System.out.println(e);
            System.out.println("Erro ao gravar no banco de dados");
            return false;
        }
    }

public static List<ClienteBean> selectAll(){
    factory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
    EntityManager em = factory.createEntityManager();
    Query query = em.createQuery("select c from cliente c");
    return query.getResultList();

}

Loan Persistence:

public static boolean adiciona(EmprestimoPOJO novo){
        try{
            factory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
            EntityManager em = factory.createEntityManager();
            //EntityTransaction tx = em.getTransaction();
            em.getTransaction().begin();

            //tx.begin();
            em.persist(novo);
            //tx.commit();
            em.getTransaction().commit();
            System.out.println("Dados Gravados com Sucesso");
            return true;
        }
        catch (Exception e){
            System.out.println(e);
            System.out.println("Erro ao gravar no banco de dados");
            return false;
        }
    }