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Spring 和 Hibernate 突然将事务设置为只读

java hibernate spring jboss spring-transactions
2022-09-04 22:15:33

我们有一个在 JBoss 4.2.3 上运行的应用程序，使用 Spring 2.5.2 和 Hibernate 3.2.6.ga。这是在Linux JEE01 2.6.16.60-0.54.5-smp上运行的，使用自己的用户。写入另一台计算机上的 Oracle 10G 数据库。

我们使用的是标准的视图 ->服务 -> dao 分层。其中每个道都标注了@Repository。

这一切都是24/7全天候运行，没有很多问题，但是每隔几天，有时在一天内几次，整个系统就会进入一个糟糕的状态，再也无法将任何东西写入数据库。这些堆栈跟踪显示在日志中：

org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not
      allowed in read-only mode (FlushMode.NEVER/MANUAL): 
Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction
      definition.

我们扫描了整个系统，系统中有一个地方的 flushmode 暂时设置为 MANUAL，之后最终的块将其设置回其原始值。这是因为我们不希望在此查询运行之前将状态刷新到数据库。所以我们不能轻易改变这一点。正常的 FlushMode 设置为 AUTO，在几个地方，我们暂时将其设置为 COMMIT，然后再次将其切换回默认值。

只有重新启动服务器才能将系统恢复到工作状态。

问题是：为什么系统将所有事务设置为只读/手动刷新模式？我用谷歌搜索了这个，但找不到解决方案。

这是我们的弹簧和休眠配置（仅显示相关部分）：

     <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
  <property name="dataSource">
   <ref bean="datasourceName" />
  </property>
  <property name="configLocation">
   <value>classpath:hibernate.cfg.xml</value>
  </property>
 </bean>

 <bean id="hibernateInterceptor"
  class="org.springframework.orm.hibernate3.HibernateInterceptor">
  <property name="sessionFactory" ref="sessionFactory" />
 </bean>

 <tx:annotation-driven transaction-manager="txManager" /> 

 <tx:advice id="txAdvice" transaction-manager="txManager" >
  <!-- the transactional semantics... -->
  <tx:attributes >
   <!-- all methods starting with 'get' are read-only -->
   <tx:method name="approve*" read-only="false"
    propagation="REQUIRED" rollback-for="java.lang.Exception" />
   <tx:method name="update*" read-only="false"   
    propagation="REQUIRED" rollback-for="java.lang.Exception"/>
   <tx:method name="save*" read-only="false"
    propagation="REQUIRED" rollback-for="java.lang.Exception"/>
            <tx:method name="delete*" read-only="false"
    propagation="REQUIRED" rollback-for="java.lang.Exception" />
   <!-- other methods use the default transaction settings (see below) -->
   <tx:method name="*" read-only="true" propagation="REQUIRED" />
  </tx:attributes>
 </tx:advice>

 <aop:config>
  <aop:pointcut id="serviceMethods"
   expression="execution(* com.myapplication.service.*.*(..))"  />
  <aop:advisor advice-ref="txAdvice" 
   pointcut-ref="serviceMethods" />
 </aop:config>

 <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" >
  <property name="sessionFactory" ref="sessionFactory"  />
 </bean>

-- end of spring config --

-- hibernate configuation --
<hibernate-configuration>
    <session-factory name="">
        <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>
        <property name="show_sql">false</property>
        <property name="use_outer_join">false</property>
        <property name="hibernate.cache.use_query_cache">true</property>
        <property name="hibernate.cache.use_second_level_cache">true</property>
        <property name="cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
        <property name="hibernate.connection.SetBigStringTryClob">true</property>
        <property name="hibernate.jdbc.batch_size">0</property>
    </session-factory>
    <mapping ----/>
</hibernate-configuration>

这是堆栈跟踪：

org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.
at org.springframework.orm.hibernate3.HibernateTemplate.checkWriteOperationAllowed(HibernateTemplate.java:1137)
at org.springframework.orm.hibernate3.HibernateTemplate$16.doInHibernate(HibernateTemplate.java:701)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.saveOrUpdate(HibernateTemplate.java:699)
at nl.company.myapp.dao.impl.GenericDAOImpl.save(GenericDAOImpl.java:94)
at nl.company.myapp.dao.impl.CallDAOImpl.save(CallDAOImpl.java:266)
at nl.company.myapp.dao.impl.CallDAOImpl.save(CallDAOImpl.java:47)
at nl.company.myapp.service.impl.CallServiceImpl.saveCall(CallServiceImpl.java:98)
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:592)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
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 org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy142.saveCall(Unknown Source)
at nl.company.myapp.view.bean.call.CallDetailBean.doSave(CallDetailBean.java:319)
at nl.company.myapp.view.bean.EditModeAwareBean.save(EditModeAwareBean.java:151)
at sun.reflect.GeneratedMethodAccessor472.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at org.apache.el.parser.AstValue.invoke(AstValue.java:131)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
at org.apache.myfaces.trinidad.component.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:46)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:190)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:458)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:763)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at nl.company.myapp.view.audit.AuditFilter.doFilter(AuditFilter.java:88)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:238)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:195)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:138)
at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:265)
at org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)
at org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:124)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
at org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:149)
at org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)
at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:366)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:595)

这一切都很好


答案 1

此异常来自 Spring 的 HibernateTemplate 类中的以下代码：

protected void checkWriteOperationAllowed(Session session) throws InvalidDataAccessApiUsageException {
    if (isCheckWriteOperations() && getFlushMode() != FLUSH_EAGER &&
            session.getFlushMode().lessThan(FlushMode.COMMIT)) {
        throw new InvalidDataAccessApiUsageException(
                "Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL): "+
                "Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.");
    }
}

此检查的基本原理解释为：

这是在 Spring 1.1 中引入的新一致性检查。

在 FlushMode 中，在 Spring 管理的会话上调用 HibernateTemplate 的保存/更新/删除方法。从不具有潜在的危险：这意味着您：

  • 要么在Spring管理的只读事务中执行此操作，该事务永远不会刷新休眠会话，即永远不会刷新保存/更新/删除调用。新检查使您知道在这种情况下不会保留更改。

  • 或者在 FlushMode.NEVER 中使用其他一些线程绑定的会话，例如 OpenSessionInViewFilter。如果要在视图呈现后覆盖 closeSession 以刷新，则还应覆盖 getSession，将会话设置为 FlushMode.AUTO。

不过，我强烈建议不要使用后者。如果您使用的是 OpenSessionInViewFilter，请将其与中间层事务结合使用，而不是让筛选器在请求完成时刷新。

这些会敲响警钟吗？

您的代码或Spring ORM中可能存在一些错误。要禁用此检查，您可以调用 setCheckWriteOperations（false）。


答案 2

评估，我检查您的配置。在春天的情境部分，你用

<!-- other methods use the default transaction settings (see below) -->
   <tx:method name="*" read-only="true" propagation="REQUIRED" />

通常，只有一些访问是只读类型，例如get/find/query等。

<!--default is required transaction-->
<tx:method name="*"/>

另一件事是，你使用openessioninview模式吗？可以在打开会话视图中正确设置刷新模式。您可以在 Web 中使用过滤器.xml或在应用程序上下文配置中使用弹簧拦截器。


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