Anyone know this exception? Caused by: java.sql.SQLException: Protocol violation

Caused by: java.sql.SQLException: Protocol violation
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:138)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:175)
at oracle.jdbc.driver.DatabaseError.check_error(DatabaseError.java:898)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:656)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:185)
at oracle.jdbc.driver.T4CPreparedStatement.execute_for_describe(T4CPreparedStatement.java:503)
at oracle.jdbc.driver.OracleStatement.execute_maybe_describe(OracleStatement.java:1029)
at oracle.jdbc.driver.T4CPreparedStatement.execute_maybe_describe(T4CPreparedStatement.java:535)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1126)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3001)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3043)
at oracle_jdbc_driver_T4CPreparedStatement_Proxy.executeQuery()
at oracle.toplink.internal.databaseaccess.DatabaseAccessor.executeSelect(DatabaseAccessor.java:744)
at oracle.toplink.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:516)
at oracle.toplink.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:441)
at oracle.toplink.threetier.ServerSession.executeCall(ServerSession.java:457)
at oracle.toplink.internal.sessions.IsolatedClientSession.executeCall(IsolatedClientSession.java:117)
at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:117)
at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:103)
at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:174)
at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:481)
at oracle.toplink.internal.queryframework.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:825)
at oracle.toplink.internal.queryframework.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:803)
at oracle.toplink.queryframework.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:473)
at oracle.toplink.queryframework.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:810)
at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:620)
at oracle.toplink.queryframework.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:778)
at oracle.toplink.queryframework.ReadAllQuery.execute(ReadAllQuery.java:451)
at oracle.toplink.publicinterface.Session.internalExecuteQuery(Session.java:2089)
at oracle.toplink.publicinterface.Session.executeQuery(Session.java:993)
at oracle.toplink.publicinterface.Session.executeQuery(Session.java:965)
at org.springframework.orm.toplink.TopLinkTemplate$2.readFromSession(TopLinkTemplate.java:219)
at org.springframework.orm.toplink.SessionReadCallback.doInTopLink(SessionReadCallback.java:75)
at org.springframework.orm.toplink.TopLinkTemplate.execute(TopLinkTemplate.java:141)
at org.springframework.orm.toplink.TopLinkTemplate.executeQuery(TopLinkTemplate.java:216)
at org.springframework.orm.toplink.TopLinkTemplate.executeQuery(TopLinkTemplate.java:210)
at com.cargosmart.repository.TopLinkInnerRepository.executeQuery(TopLinkInnerRepository.java:98)
at com.cargosmart.repository.TopLinkRepository.executeQuery(TopLinkRepository.java:78)
at com.cargosmart.repository.TopLinkRepository.findAllByQuery(TopLinkRepository.java:94)
at com.cargosmart.carrier.repository.PartyRepositoryImpl.findBookingConfirmationsByBillOfLadingNumber(PartyRepositoryImpl.java:1983)
at com.cargosmart.carrier.service.business.shipmentdetail.ShipmentDetailServiceImpl.generateShipmentDetailByBillOfLadingsForCargoTracking(ShipmentDetailServiceImpl.java:719)
at com.cargosmart.carrier.service.business.shipmentdetail.ShipmentDetailServiceImpl.findGeneralShipmentByBillOfLadingNumberForTracking(ShipmentDetailServiceImpl.java:345)
at sun.reflect.GeneratedMethodAccessor1034.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.cargosmart.util.cache.CargosmartEhcacheServiceAdvice.invoke(CargosmartEhcacheServiceAdvice.java:24)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:126)
... 60 more