CheckToursDBTest failed while updating sequence value on disk

ERROR XSTA2: A transaction was already active, when attempt was made to make another transaction active.
	at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:290)
	at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:285)
	at org.apache.derby.impl.store.raw.xact.XactFactory.pushTransactionContext(XactFactory.java:766)
	at org.apache.derby.impl.store.raw.xact.XactFactory.startCommonTransaction(XactFactory.java:293)
	at org.apache.derby.impl.store.raw.xact.XactFactory.startNestedUpdateUserTransaction(XactFactory.java:350)
	at org.apache.derby.impl.store.raw.RawStore.startNestedUpdateUserTransaction(RawStore.java:460)
	at org.apache.derby.impl.store.access.RAMTransaction.startNestedUserTransaction(RAMTransaction.java:2326)
	at org.apache.derby.impl.sql.catalog.SequenceUpdater.updateCurrentValueOnDisk(SequenceUpdater.java:486)
	at org.apache.derby.impl.sql.catalog.SequenceUpdater.clean(SequenceUpdater.java:218)
	at org.apache.derby.impl.sql.catalog.SequenceUpdater.clearIdentity(SequenceUpdater.java:257)
	at org.apache.derby.impl.services.cache.ConcurrentCache.removeEntry(ConcurrentCache.java:167)
	at org.apache.derby.impl.services.cache.ConcurrentCache.ageOut(ConcurrentCache.java:583)
	at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.clearSequenceCaches(DataDictionaryImpl.java:8968)
	at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.clearCaches(DataDictionaryImpl.java:8951)
	at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.clearCaches(DataDictionaryImpl.java:8937)
	at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.doneReading(DataDictionaryImpl.java:1184)
	at org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java:519)
	at org.apache.derby.impl.sql.GenericStatement.prepareStorable(GenericStatement.java:687)
	at org.apache.derby.iapi.sql.dictionary.SPSDescriptor.compileStatement(SPSDescriptor.java:373)
	at org.apache.derby.iapi.sql.dictionary.SPSDescriptor.prepareAndRelease(SPSDescriptor.java:264)
	at org.apache.derby.iapi.sql.dictionary.SPSDescriptor.getPreparedStatement(SPSDescriptor.java:739)
	at org.apache.derby.iapi.sql.dictionary.SPSDescriptor.getPreparedStatement(SPSDescriptor.java:655)
	at org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeSPS(GenericTriggerExecutor.java:171)
	at org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeWhenClauseAndAction(GenericTriggerExecutor.java:346)
	at org.apache.derby.impl.sql.execute.RowTriggerExecutor.fireTrigger(RowTriggerExecutor.java:113)
	at org.apache.derby.impl.sql.execute.TriggerEventActivator.notifyEvent(TriggerEventActivator.java:272)
	at org.apache.derby.impl.sql.execute.UpdateResultSet.fireAfterTriggers(UpdateResultSet.java:831)
	at org.apache.derby.impl.sql.execute.UpdateResultSet.open(UpdateResultSet.java:282)
	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470)
	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:349)
	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1338)
	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:704)
	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:631)
	at org.apache.derbyTesting.functionTests.tests.demo.CheckToursDBTest.doUpdate(CheckToursDBTest.java:163)
	at org.apache.derbyTesting.functionTests.tests.demo.CheckToursDBTest.testToursDB(CheckToursDBTest.java:108)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at junit.framework.TestCase.runTest(TestCase.java:168)
	at junit.framework.TestCase.runBare(TestCase.java:134)
	at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:118)
	at org.apache.derbyTesting.junit.BaseJDBCTestCase.runBareOverridable(BaseJDBCTestCase.java:440)
	at org.apache.derbyTesting.junit.BaseJDBCTestCase.runBare(BaseJDBCTestCase.java:457)
	at junit.framework.TestResult$1.protect(TestResult.java:110)
	at junit.framework.TestResult.runProtected(TestResult.java:128)
	at junit.framework.TestResult.run(TestResult.java:113)
	at junit.framework.TestCase.run(TestCase.java:124)
	at junit.framework.TestSuite.runTest(TestSuite.java:232)
	at junit.framework.TestSuite.run(TestSuite.java:227)
	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
	at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
	at junit.framework.TestResult.runProtected(TestResult.java:128)
	at junit.extensions.TestSetup.run(TestSetup.java:27)
	at junit.framework.TestSuite.runTest(TestSuite.java:232)
	at junit.framework.TestSuite.run(TestSuite.java:227)
	at junit.framework.TestSuite.runTest(TestSuite.java:232)
	at junit.framework.TestSuite.run(TestSuite.java:227)
	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:518)
	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1052)
	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:906)