No Persistence provider for EntityManager named

Question

I have my persistence.xml with the same name using TopLink under the META-INF directory. Then, I have my code calling it with:

Answer 1

In an OSGi-context, it's necessary to list your persistence units in the bundle's MANIFEST.MF, e.g.

JPA-PersistenceUnits: my-persistence-unit

Otherwise, the JPA-bundle won't know your bundle contains persistence units.

See http://wiki.eclipse.org/EclipseLink/Examples/OSGi/Developing_with_EclipseLink_OSGi_in_PDE .