Am I supposed to call EntityManager.clear() often to avoid memory leaks?

Question

I\'m new to JPA/OpenJPA and I noticed that if I don\'t call EntityManager.clear() after i persist entities I get an OutOfMemoryError (I keep adding

Answer 1

Depends how many objects you bring into the persistence process (read). If you handle large numbers (or some of the objects are large) then use of clear() can make sense. Each time an object is read it should be put in the L1 cache by the JPA impl.