I reran the test case and it also got the same exception: <openjpa-2.2.0-r422266:1244990 fatal store error> org.apache.openjpa.persistence.RollbackException: The transaction has been rolled back. See the nested exceptions for details on the errors that occurred. FailedObject: test.KeyClass@5e4b2b75 at org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:594) at test.TestCollectionValueMapper.testUniqueKey(TestCollectionValueMapper.java:148) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at org.junit.runners.ParentRunner.run(ParentRunner.java:300) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: <openjpa-2.2.0-r422266:1244990 fatal general error> org.apache.openjpa.persistence.PersistenceException: The transaction has been rolled back. See the nested exceptions for details on the errors that occurred. FailedObject: test.KeyClass@5e4b2b75 at org.apache.openjpa.kernel.BrokerImpl.newFlushException(BrokerImpl.java:2337) at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:2174) at org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:2072) at org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1990) at org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:81) at org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1514) at org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:933) at org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:570) ... 24 more Caused by: <openjpa-2.2.0-r422266:1244990 fatal store error> org.apache.openjpa.persistence.EntityExistsException: Unique index or primary key violation: "U_KEYCLSS_UNIQUEFIELD1_INDEX_4 ON PUBLIC.KEYCLASS(UNIQUEFIELD1)"; SQL statement: INSERT INTO KeyClass (pk, otherField1, uniqueField1) VALUES (?, ?, ?) [23505-160] {prepstmnt 1449799553 INSERT INTO KeyClass (pk, otherField1, uniqueField1) VALUES (?, ?, ?) [params=(long) 451, (null) null, (String) u1]} [code=23505, state=23505] FailedObject: test.KeyClass@5e4b2b75 at org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4903) at org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4878) at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:136) at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:78) at org.apache.openjpa.jdbc.kernel.PreparedStatementManagerImpl.flushAndUpdate(PreparedStatementManagerImpl.java:143) at org.apache.openjpa.jdbc.kernel.BatchingPreparedStatementManagerImpl.flushAndUpdate(BatchingPreparedStatementManagerImpl.java:79) at org.apache.openjpa.jdbc.kernel.PreparedStatementManagerImpl.flushInternal(PreparedStatementManagerImpl.java:99) at org.apache.openjpa.jdbc.kernel.PreparedStatementManagerImpl.flush(PreparedStatementManagerImpl.java:87) at org.apache.openjpa.jdbc.kernel.ConstraintUpdateManager.flush(ConstraintUpdateManager.java:357) at org.apache.openjpa.jdbc.kernel.ConstraintUpdateManager.flushGraph(ConstraintUpdateManager.java:349) at org.apache.openjpa.jdbc.kernel.ConstraintUpdateManager.flush(ConstraintUpdateManager.java:97) at org.apache.openjpa.jdbc.kernel.BatchingConstraintUpdateManager.flush(BatchingConstraintUpdateManager.java:59) at org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.flush(AbstractUpdateManager.java:103) at org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.flush(AbstractUpdateManager.java:76) at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.flush(JDBCStoreManager.java:713) at org.apache.openjpa.kernel.DelegatingStoreManager.flush(DelegatingStoreManager.java:131) ... 31 more Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: Unique index or primary key violation: "U_KEYCLSS_UNIQUEFIELD1_INDEX_4 ON PUBLIC.KEYCLASS(UNIQUEFIELD1)"; SQL statement: INSERT INTO KeyClass (pk, otherField1, uniqueField1) VALUES (?, ?, ?) [23505-160] {prepstmnt 1449799553 INSERT INTO KeyClass (pk, otherField1, uniqueField1) VALUES (?, ?, ?) [params=(long) 451, (null) null, (String) u1]} [code=23505, state=23505] at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(LoggingConnectionDecorator.java:247) at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(LoggingConnectionDecorator.java:223) at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.access$1000(LoggingConnectionDecorator.java:72) at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator$LoggingConnection$LoggingPreparedStatement.executeUpdate(LoggingConnectionDecorator.java:1162) at org.apache.openjpa.lib.jdbc.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:272) at org.apache.openjpa.jdbc.kernel.JDBCStoreManager$CancelPreparedStatement.executeUpdate(JDBCStoreManager.java:1741) at org.apache.openjpa.jdbc.kernel.PreparedStatementManagerImpl.executeUpdate(PreparedStatementManagerImpl.java:267) at org.apache.openjpa.jdbc.kernel.PreparedStatementManagerImpl.flushAndUpdate(PreparedStatementManagerImpl.java:118) ... 42 more
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