I don't think this behavior is normal, but I haven't had a chance to look into it. If you have a testcase handy that usually makes things quicker for us - but we should be able to produce one fairly quickly.
In another thread Rick suggested using OpenJPA's LRS<http://openjpa.apache.org/builds/latest/docs/manual/manual.html#ref_guide_pc_scos_proxy_lrs>support, have you been able to give that a try? -mike On Thu, Aug 4, 2011 at 9:33 AM, Michael Pflueger <michael.pflue...@sma.de>wrote: > Hi, > > I'm reading a huge table with openJPA in chunks, like this: > > List list = query.setMaxResults(batchSize).setFirstResult(position * > batchSize).getResultList(); > > > And iterate over it like this: > > for (Entity e : list) { > //entityManager.detach(e); > } > > Now my Java Heap Space fills slowly up to around close to 100%, then stays > around that value, sometimes it starts fluctuating... > > Now I uncommented entityManager.detach(e), but it behaves more or less the > same, it fills my whole heap space. > In small tests I have not gotten an OutOfMemoryException yet, but the > bigger production app I need this for already got some after some runtime... > > I don't really understand this behavior, is there anything I can do about > it? > I already tried removing the detached state field from the Entity but that > does not seem to help either. > > What does help is repeatedly calling entityManager.clear() to clear the > whole context, but this solution might not always be desireable. > > So, besides possible solutions I also wonder if this behavior is "normal" > or whether I should try to create a small testCase for this aswell. > > > Regards, > Michael > ___________________________________________________ > > SMA Solar Technology AG > Aufsichtsrat: Guenther Cramer (Vorsitzender) > Vorstand: Juergen Dolle, Roland Grebe, Uwe Hertel, Pierre-Pascal Urbon, > Marko Werner > Handelsregister: Amtsgericht Kassel HRB 3972 > Sitz der Gesellschaft: 34266 Niestetal > USt-ID-Nr. DE 113 08 59 54 > WEEE-Reg.-Nr. DE 95881150 > ___________________________________________________ > >
