NPE in EAP when jdbc attempts to close a db connection following a Hibernate flush

Solution In Progress - Updated -

Issue

  • the following NPE error in server.log
Caused by: java.lang.NullPointerException
                at org.jboss.jca.adapters.jdbc.WrappedConnection.close(WrappedConnection.java:265)
                at org.hibernate.service.jdbc.connections.internal.DatasourceConnectionProviderImpl.closeConnection(DatasourceConnectionProviderImpl.java:148)
                at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.releaseConnection(AbstractSessionImpl.java:312)
                at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.releaseConnection(LogicalConnectionImpl.java:241)
                at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.aggressiveRelease(LogicalConnectionImpl.java:200)
                at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.afterTransaction(JdbcCoordinatorImpl.java:281)
                at org.hibernate.engine.transaction.internal.TransactionCoordinatorImpl.afterTransaction(TransactionCoordinatorImpl.java:149)
                at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorNonTrackingImpl.doAfterCompletion(SynchronizationCallbackCoordinatorNonTrackingImpl.java:136)
                at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorTrackingImpl.processAnyDelayedAfterCompletion(SynchronizationCallbackCoordinatorTrackingImpl.java:103)
                at org.hibernate.internal.SessionImpl.delayedAfterCompletion(SessionImpl.java:636)
                at org.hibernate.internal.SessionImpl.checkTransactionSynchStatus(SessionImpl.java:2034)
                at org.hibernate.internal.SessionImpl.getPersistenceContext(SessionImpl.java:1863)
                at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:352)
                at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
                at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1159)
                at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:996)
                at org.jboss.as.jpa.container.AbstractEntityManager.flush(AbstractEntityManager.java:439)
                at <application code>

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