Hibernate:  
     select 
         hibernate_sequence.nextval  
     from 
         dual 
 Hibernate:  
     insert  
     into 
         MAP_T_RELAY_STATION 
         (DATA_GUID, RELAY_STATION_NAME, X, Y, RELAY_STATION_ID)  
     values 
         (?, ?, ?, ?, ?) 
 2011-5-4 9:21:48 org.hibernate.util.JDBCExceptionReporter logExceptions 
 警告: SQL Error: 1, SQLState: 23000 
 2011-5-4 9:21:48 org.hibernate.util.JDBCExceptionReporter logExceptions 
 严重: ORA-00001: 违反唯一约束条件 (JMJL.MAP_T_RELAY_STATION_KEY) 
  
 2011-5-4 9:21:48 org.hibernate.util.JDBCExceptionReporter logExceptions 
 警告: SQL Error: 1, SQLState: 23000 
 2011-5-4 9:21:48 org.hibernate.util.JDBCExceptionReporter logExceptions 
 严重: ORA-00001: 违反唯一约束条件 (JMJL.MAP_T_RELAY_STATION_KEY) 
  
 2011-5-4 9:21:48 org.hibernate.event.def.AbstractFlushingEventListener performExecutions 
 严重: Could not synchronize database state with session 
 org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update 
 	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71) 
 	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) 
 	at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:249) 
 	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235) 
 	at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:139) 
 	at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) 
 	at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) 
 	at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) 
 	at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338) 
 	at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106) 
 	at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:655) 
 	at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:709) 
 	at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:678) 
 	at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:321) 
 	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116) 
 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) 
 	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89) 
 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) 
 	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 
 	at $Proxy0.saveRelayStation(Unknown Source) 
 	at com.adam.dev.service.RelayStationService.saveRelayStation(RelayStationService.java:37) 
 	at com.adam.dev.action.RelayStationAction.saveRelayStation(RelayStationAction.java:63) 
 	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.j