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Hibernate version: 3.1.3

Mapping documents:

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:
ERROR 2007-02-15 13:39:37,593 BasicLazyInitializer [main]: - CGLIB Enhancement failed: com.etc.ourClass

net.sf.cglib.core.CodeGenerationException: java.lang.reflect.InvocationTargetException-->null
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:237)
at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
at net.sf.cglib.proxy.Enhancer.createClass(Enhancer.java:317)
at org.hibernate.proxy.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:126)
at org.hibernate.proxy.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:41)
at org.hibernate.tuple.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:161)
at org.hibernate.tuple.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:131)
at org.hibernate.tuple.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55)
at org.hibernate.tuple.TuplizerLookup.create(TuplizerLookup.java:64)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:257)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:412)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:108)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:216)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1176)

Name and version of the database you are using:

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:


Dear Hibernaters,

our current web applications creates MS-Acccess DBs on the fly where data from Oracle is replicated into. In our case, each new MS-Access DB requires its own SessionFactory which is properly closed and released after successful export of the MS-Access file to the user.

Since configuring the SessionFactory on-the-fly generates CGLIB enhanced classes our VMs permanent generation space grows gradually with each export, and inevitabilly causes the VM to quit with an OutOfMemoryError: PermGen space.

We were hoping these classes to be unloaded again after closing and releasing the SessionFactory. Unfortunately, that does not seem to be the case here.

Is there any proposed solution to this phenomenon ?
Any hints and advises are welcome ?

Thanx in advance.

dokmatik

Hi again,

after better queries through this forum I have found excellent links and solutions to our current leak problem.

This sort of "unintentional object/class retention" has already been discussed in detail.
http://forum.hibernate.org/viewtopic.php?t=966401

A solution to this problem is also available:

http://opensource.atlassian.com/projects/hibernate/browse/HHH-2185

I just love this forum.

Regards

dokmatik

CAN I RATE MYSELF ?????