Can I use resource local application managed EntityManager in SB?

[Mellon Sun]

I tried and encountered an error:

Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named JPA2: The following providers:
oracle.toplink.essentials.PersistenceProvider
oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider
Returned null to createEntityManagerFactory.
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:154)

I am not sure I config everything right and I doubt it's prohibited by the spec. I'd appreciate any help.

[Ralph Jaus]

You need to use an application managed entity manager: Inject an entity manager factory using @PersistenceUnit and create the entity manager via the entity manager factory's createEntityManager() method. Don't forget to set transaction-type="RESOURCE_LOCAL" in the persistence.xml file.

[Mellon Sun]

I did what you say.

OK, I believe you proved I am right. I have to go on for the exam, I am running out of the time.

Thank you.
[ December 20, 2008: Message edited by: Mellon Sun ]