Im doing some very simple test with JSF2 + CDI + JPA + GlassFish 3, this is my backing bean:

package test;

import java.io.Serializable;

import javax.enterprise.context.RequestScoped;
import javax.inject.Named;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import entidad.Cliente;

@Named
@RequestScoped
public class Test1 implements Serializable {

     private static final long serialVersionUID = -8891397705401579378L;

     public String getHolaMundo() {
          System.out.println("getHolaMundo()");
          return "Hola Mundo !!";
     }
     
     @PersistenceContext(unitName="test1") EntityManager em;

     public void crearCliente() {
          System.out.println("crearCliente() " + em.toString());
          Cliente c = new Cliente();
          c.setId(0);
          c.setNombre("Hola mundo !!");
          c.setSaldo(100);
          em.persist(c);
          em.flush();
     }
}

With a button in a JSF page I invoke "crearCliente()" but I get javax.persistence.TransactionRequiredException

Do I have to use EJB instead of pojo for backing bean?

What Im missing?