I\'m using the Google AppEngine, with Java. When I use some datastore features, I\'m getting an error message:
Object with id \"edvaltt.Teacher@64064b\" i
DataNucleus,
Thank you for the pm.close(); tip. I was making a query with one em
pm.close();
em = EMF.get().createEntityManager();
and making a commit with another one without closing the first one.