Hi,

this is very long time to post here,

i'm facing error while updating a custom class(pojo) object with update method of hibernate session.

I explain you structure of all classes.
I have an Engine which made by 10-20 classes to calculate data. I get a new session when entering in engine and after that i maintain that session through out the engine, i found at a particular class i again create a new session(by mistake) which is not required.If remove the code for creating new session in that particular class the engine working fine.

Please explain why the following error comes

Thank you for your guidance.

Error are as follow

error:org.hibernate.HibernateException: illegally attempted to associate a proxy with two open Sessions
at org.hibernate.proxy.AbstractLazyInitializer.setSession(AbstractLazyInitializer.java:68)
at org.hibernate.engine.PersistenceContext.reassociateProxy(PersistenceContext.java:520)
at org.hibernate.engine.PersistenceContext.reassociateIfUninitializedProxy(PersistenceContext.java:486)
at org.hibernate.event.def.ProxyVisitor.processEntity(ProxyVisitor.java:27)
at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:107)
at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:64)
at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:58)
at org.hibernate.event.def.AbstractVisitor.process(AbstractVisitor.java:129)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:267)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:214)
at org.hibernate.event.def.DefaultUpdateEventListener.performSaveOrUpdate(DefaultUpdateEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.update(SessionImpl.java:499)
at org.hibernate.impl.SessionImpl.update(SessionImpl.java:490)
at com.mpm.bo.dentalcharts.ProgressNotesDAO.updatePatientAccountObjectWhileCreatingInsuranceEstimates(ProgressNotesDAO.java:496)

I'm not a specialist, but I'll say that you try to update on session2 a persistent object linked to session1. I guess that's forbiden, because of conflict between the update on db, cache problem...

You may try to evict the object from the session1, then save it in session2. May be flushing session1 will help also.

please reply ..

The fix i had done of the previous post not working consistently.

thank you Yoann56