Hibernate "IllegalStateException: An entity copy was already assigned to a different entity" in JBoss EAP 6

Solution Verified - Updated -

Issue

Migrating to EAP 6/Hibernate 4 and encountering an exception like the following

ERROR [org.jboss.as.ejb3.invocation] (http-/0.0.0.0:443-1) JBAS014134: EJB Invocation failed on component SatelliteDao for method public abstract long com.xzy.Dao.persist(com.xyz.SomeEntity) throws java.lang.IllegalStateException: An entity copy was already assigned to a different entity.
    at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:165) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
...
Caused by: java.lang.IllegalStateException: An entity copy was already assigned to a different entity.
    at org.hibernate.event.internal.EventCache.put(EventCache.java:184) [hibernate-core-4.1.3.Final-redhat-1.jar:4.1.3.Final-redhat-1]
    at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:285) [hibernate-core-4.1.3.Final-redhat-1.jar:4.1.3.Final-redhat-1]
    at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:151) [hibernate-core-4.1.3.Final-redhat-1.jar:4.1.3.Final-redhat-1]

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP) 6
  • Hibernate 4

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In
Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.