我正在使用 Spring 3 + Hibernate 做一个项目。当我尝试获取包含对象 PoaUpa 的对象时。我得到 java.sql.SQLException: ORA-00918 这个单向连接:
@OneToOne
@JoinColumns({
@JoinColumn(name="ID_ESCALA",referencedColumnName="ID_ESCALA",insertable=false,updatable=false),
@JoinColumn(name="ANO",referencedColumnName="ANO",insertable=false,updatable=false),
@JoinColumn(name="MES",referencedColumnName="MES",insertable=false,updatable=false)
})
private PoaUpa poaUpa;
这里是查询:
@Override
public Autorizacion getAutorizacionDeterminada(User u, Long ano,Long mes, Long escala) {
Query q = em.createQuery("SELECT a FROM Autorizacion a WHERE a.ano=:ano AND a.mes=:mes AND a.idEscala=:escala");
q.setParameter("ano", ano);
q.setParameter("mes", mes);
q.setParameter("escala", escala);
return (Autorizacion) q.getSingleResult();
}
这里是控制台输出:
Hibernate: select * from ( select autorizaci0_.ano as ano0_, autorizaci0_.ID_ESCALA as ID2_0_, autorizaci0_.mes as mes0_, autorizaci0_.AUTORIZACION_HORAS_DIA_FIJIS as AUTORIZA4_0_, autorizaci0_.AUTORIZACION_HORAS_EVENT as AUTORIZA5_0_, autorizaci0_.AUTORIZACION_HORAS_FACTP as AUTORIZA6_0_, autorizaci0_.AUTORIZACION_HORAS_FIJIS as AUTORIZA7_0_, autorizaci0_.AUTORIZACION_HORAS_FIJOS as AUTORIZA8_0_, autorizaci0_.AUTORIZACION_HORAS_SEM_FACTP as AUTORIZA9_0_, autorizaci0_.AUTORIZACION_NAP as AUTORIZ10_0_, autorizaci0_.AUTORIZACION_NUM_PERS_EVENT as AUTORIZ11_0_, autorizaci0_.AUTORIZACION_OBSERVACIONES as AUTORIZ12_0_, autorizaci0_.PETICION_HORAS_DIA_FIJIS as PETICION13_0_, autorizaci0_.PETICION_HORAS_EVENT as PETICION14_0_, autorizaci0_.PETICION_HORAS_FACTP as PETICION15_0_, autorizaci0_.PETICION_HORAS_FIJIS as PETICION16_0_, autorizaci0_.PETICION_HORAS_FIJOS as PETICION17_0_, autorizaci0_.PETICION_HORAS_SEM_FACTP as PETICION18_0_, autorizaci0_.PETICION_NAP as PETICION19_0_, autorizaci0_.PETICION_NUM_PERS_EVENT as PETICION20_0_, autorizaci0_.PETICION_OBSERVACIONES as PETICION21_0_, autorizaci0_.ANO as ANO0_, autorizaci0_.MES as MES0_, autorizaci0_.REALIZACION_HORAS_DIA_FIJIS as REALIZA22_0_, autorizaci0_.REALIZACION_HORAS_EVENT as REALIZA23_0_, autorizaci0_.REALIZACION_HORAS_FACTP as REALIZA24_0_, autorizaci0_.REALIZACION_HORAS_FIJIS as REALIZA25_0_, autorizaci0_.REALIZACION_HORAS_FIJOS as REALIZA26_0_, autorizaci0_.REALIZACION_HORAS_SEM_FACTP as REALIZA27_0_, autorizaci0_.REALIZACION_NAP as REALIZA28_0_, autorizaci0_.REALIZACION_NUM_PERS_EVENT as REALIZA29_0_, autorizaci0_.REALIZACION_OBSERVACIONES as REALIZA30_0_ from TTR_AUTORIZACION autorizaci0_ where autorizaci0_.ano=? and autorizaci0_.mes=? and autorizaci0_.ID_ESCALA=? ) where rownum <= ?
WARN : org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 918, SQLState: 42000
ERROR: org.hibernate.engine.jdbc.spi.SqlExceptionHelper - ORA-00918: columna definida de forma ambigua
DEBUG: org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver - Resolving exception from handler [public es.iberia.tryp.model.entities.Autorizacion es.iberia.tryp.controllers.AdministracionController.getJSONAutorizacion(org.springframework.ui.Model,javax.servlet.http.HttpSession,java.lang.Long)]: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: ORA-00918: columna definida de forma ambigua
DEBUG: org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver - Resolving exception from handler [public es.iberia.tryp.model.entities.Autorizacion es.iberia.tryp.controllers.AdministracionController.getJSONAutorizacion(org.springframework.ui.Model,javax.servlet.http.HttpSession,java.lang.Long)]: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: ORA-00918: columna definida de forma ambigua
DEBUG: org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver - Resolving exception from handler [public es.iberia.tryp.model.entities.Autorizacion es.iberia.tryp.controllers.AdministracionController.getJSONAutorizacion(org.springframework.ui.Model,javax.servlet.http.HttpSession,java.lang.Long)]: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: ORA-00918: columna definida de forma ambigua
DEBUG: org.springframework.web.servlet.DispatcherServlet - Could not complete request
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: ORA-00918: columna definida de forma ambigua
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1367)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1295)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:317)
at es.iberia.tryp.model.entities.dao.impl.AutorizacionDAOImpl.getAutorizacionDeterminada(AutorizacionDAOImpl.java:25)
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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy44.getAutorizacionDeterminada(Unknown Source)
at es.iberia.tryp.services.impl.AdministracionServiceImpl.getAutorizacionDeterminada(AdministracionServiceImpl.java:233)
at es.iberia.tryp.controllers.AdministracionController.getJSONAutorizacion(AdministracionController.java:84)
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.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.hibernate.exception.SQLGrammarException: ORA-00918: columna definida de forma ambigua
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:122)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at $Proxy56.executeQuery(Unknown Source)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1953)
at org.hibernate.loader.Loader.doQuery(Loader.java:829)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
at org.hibernate.loader.Loader.doList(Loader.java:2438)
at org.hibernate.loader.Loader.doList(Loader.java:2424)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2254)
at org.hibernate.loader.Loader.list(Loader.java:2249)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1248)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:284)
... 46 more
Caused by: java.sql.SQLException: ORA-00918: columna definida de forma ambigua
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:799)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1037)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:839)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1132)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3316)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3361)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
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.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
... 61 more
05-jul-2012 10:51:08 org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: El Servlet.service() para el servlet [appServlet] en el contexto con ruta [/tryp] lanzó la excepción [Request processing failed; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: ORA-00918: columna definida de forma ambigua
] con causa raíz
java.sql.SQLException: ORA-00918: columna definida de forma ambigua
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:799)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1037)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:839)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1132)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3316)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3361)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
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.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at $Proxy56.executeQuery(Unknown Source)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1953)
at org.hibernate.loader.Loader.doQuery(Loader.java:829)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
at org.hibernate.loader.Loader.doList(Loader.java:2438)
at org.hibernate.loader.Loader.doList(Loader.java:2424)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2254)
at org.hibernate.loader.Loader.list(Loader.java:2249)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1248)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:284)
at es.iberia.tryp.model.entities.dao.impl.AutorizacionDAOImpl.getAutorizacionDeterminada(AutorizacionDAOImpl.java:25)
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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy44.getAutorizacionDeterminada(Unknown Source)
at es.iberia.tryp.services.impl.AdministracionServiceImpl.getAutorizacionDeterminada(AdministracionServiceImpl.java:233)
at es.iberia.tryp.controllers.AdministracionController.getJSONAutorizacion(AdministracionController.java:84)
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.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
最佳答案
解决了更改连接:
@OneToOne
@JoinColumns({
@JoinColumn(name="ID_ESCALA",referencedColumnName="ID_ESCALA",insertable=false,updatable=false),
@JoinColumn(name="ANO",referencedColumnName="ANO",insertable=false,updatable=false),
@JoinColumn(name="MES",referencedColumnName="MES",insertable=false,updatable=false)
})
private PoaUpa poaUpa;
对于此连接:
@OneToOne
@JoinTable(name="TTR_POA_UPA",
joinColumns = {
@JoinColumn(name="ANO", insertable=false, updatable=false),
@JoinColumn(name="ID_ESCALA", insertable=false, updatable=false),
@JoinColumn(name="MES", insertable=false, updatable=false)
},
inverseJoinColumns = {
@JoinColumn(name="ANO", insertable=false, updatable=false),
@JoinColumn(name="ID_ESCALA", insertable=false, updatable=false),
@JoinColumn(name="MES", insertable=false, updatable=false)
}
)
private PoaUpa poaUpa;
编辑:显示Why changing the order of the joinColumn, hibernate return a correct or incorrect query?了解更多详情
关于java - Spring 3 : @OneToOne unidirectional generate java. sql.SQLException: ORA-00918，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11341080/