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NonUnique Object Exception

 
Ashok Kumar
Greenhorn
Posts: 7
Chrome Linux Spring
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Am using EJB2.1 and JPA...
in persistence am giving "JTA",
Ejb-jar Xml i configured <container transaction> properly.
At the first insertion into DB,
persist(object)-inserted successfully,
during second insert persist(object) am getting the exception

Caused by: org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session:
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:168)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:49)
at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:131)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:87)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:38)
at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:618)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:592)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:596)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:213)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at com.ibm.ws.webservices.engine.dispatchers.java.JavaDispatcher.invokeMethod(JavaDispatcher.java:178)
at com.ibm.ws.webservices.engine.dispatchers.java.JavaDispatcher.invokeOperation(JavaDispatcher.java:141)
at com.ibm.ws.webservices.engine.dispatchers.SoapRPCProcessor.processRequestResponse(SoapRPCProcessor.java:448)
at com.ibm.ws.webservices.engine.dispatchers.SoapRPCProcessor.processMessage(SoapRPCProcessor.java:413)
at com.ibm.ws.webservices.engine.dispatchers.BasicDispatcher.processMessage(BasicDispatcher.java:134)
 
Jaikiran Pai
Marshal
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Posts: 10447
227
IntelliJ IDE Ubuntu
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Ashok,

There was a similar post, here, in which Mark had explained the cause of this exception. That will help you understand why you are running into this issue and probably will help in fixing it.
 
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