After injecting PersistenceUnitDependencyResolver, this piece of pseudo code should do the trick: String beanName = persistenceUnitDependencyResolver.resolvePersistenceUnitSupplier(deploymentUnit, persistenceUnitName); | PersistenceUnitDeployment deployment = lookup(beanName); | ManagedEntityManagerFactory managedFactory = deployment.getManagedFactory(); | return new InjectedEntityManagerFactory(managedFactory); Although PersistenceUnitDeployment is an internal. Maybe we should add a simple utility class to jpa-deployers. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4200154#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...