java.sql.SQLException: 關閉的連接 解決辦法

程序如果長時間不進行數據庫操作，那么數據源中的 Connection 很可能已經斷開。其原因有可能是防火牆，或者連接的數據庫設置的超時時間。這里使用的是 C3P0 連接 oracle 數據庫，引起的異常信息為：

 

 

org.springframework.transaction.TransactionSystemException: Could not roll back Hibernate transaction; nested exception is org.hibernate.TransactionException: rollback failed

at org.springframework.orm.hibernate4.HibernateTransactionManager.doRollback(HibernateTransactionManager.java:503)

at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:845)

at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:822)

at org.springframework.transaction.interceptor.TransactionAspectSupport.completeTransactionAfterThrowing(TransactionAspectSupport.java:411)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:114)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)

at com.platform.dao.TasksDAO$$EnhancerByCGLIB$$abcb28f5.getTaskById(<generated>)

 

at com.platform.manager.TasksManager.getTaskById(TasksManager.java:287)

at com.platform.manager.TasksManager.checkResult(TasksManager.java:300)

at com.platform.timer.TimerBase.tasksListener(TimerBase.java:149)

at com.platform.timer.TimerBase.run(TimerBase.java:81)

at java.util.TimerThread.mainLoop(Timer.java:555)

at java.util.TimerThread.run(Timer.java:505)

Caused by: org.hibernate.TransactionException: rollback failed

at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:215)

at org.springframework.orm.hibernate4.HibernateTransactionManager.doRollback(HibernateTransactionManager.java:500)

... 15 more

Caused by: org.hibernate.TransactionException: unable to rollback against JDBC connection

at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:167)

at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:209)

... 16 more

Caused by: java.sql.SQLException: 關閉的連接

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:207)

at oracle.jdbc.driver.PhysicalConnection.rollback(PhysicalConnection.java:1160)

at com.alibaba.china.jdbc.proxy.simple.ConnectionProxy.rollback(ConnectionProxy.java:228)

at com.mchange.v2.c3p0.impl.NewProxyConnection.rollback(NewProxyConnection.java:855)

at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:163)

... 17 more

 

異常拋出的地方為 Spring 的事務管理 transactionManager，而並非程序代碼。即便捕捉到異常，使用 sessionFactory.openSession 也會拋出如下異常：

 

 

org.springframework.transaction.TransactionSystemException: Could not roll back Hibernate transaction; nested exception is org.hibernate.TransactionException: rollback failed

at org.springframework.orm.hibernate4.HibernateTransactionManager.doRollback(HibernateTransactionManager.java:503)

at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:845)

at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:822)

at org.springframework.transaction.interceptor.TransactionAspectSupport.completeTransactionAfterThrowing(TransactionAspectSupport.java:411)

 

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:114)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)

 

at com.platform.dao.TasksDAO$$EnhancerByCGLIB$$abcb28f5.getTaskByNewSession(<generated>)

at com.platform.manager.TasksManager.checkResult(TasksManager.java:303)

at com.platform.timer.TimerBase.tasksListener(TimerBase.java:149)

at com.platform.timer.TimerBase.run(TimerBase.java:81)

at java.util.TimerThread.mainLoop(Timer.java:555)

at java.util.TimerThread.run(Timer.java:505)

Caused by: org.hibernate.TransactionException: rollback failed

at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:215)

 

at org.springframework.orm.hibernate4.HibernateTransactionManager.doRollback(HibernateTransactionManager.java:500)

... 14 more

Caused by: org.hibernate.TransactionException: unable to rollback against JDBC connection

at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:167)

at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:209)

... 15 more

Caused by: java.sql.SQLException: Io 異常: Software caused connection abort: recv failed

 

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:111)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:254)

at oracle.jdbc.driver.T4CConnection.doRollback(T4CConnection.java:577)

at oracle.jdbc.driver.PhysicalConnection.rollback(PhysicalConnection.java:1163)

at com.alibaba.china.jdbc.proxy.simple.ConnectionProxy.rollback(ConnectionProxy.java:228)

at com.mchange.v2.c3p0.impl.NewProxyConnection.rollback(NewProxyConnection.java:855)

at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:163)

... 16 more

 

解決的辦法是：

 

c3p0 自定義配置：

 

 

 

<!-- 數據庫連接聲明 -->

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"

destroy-method="close">

<property name="driverClass" value="com.alibaba.china.jdbc.SimpleDriver" />

<!-- <property name="driverClass" value="oracle.jdbc.OracleDriver" /> -->

<property name="jdbcUrl" value="jdbc:oracle:thin:@202.116.70.180:61166:orcl" />

<!-- 每60秒檢查所有連接池中的空閑連接。Default: 0 -->

<property name="idleConnectionTestPeriod" value="60" />

  <!--如果設為true那么在取得連接的同時將校驗連接的有效性。Default: false -->

<property name="testConnectionOnCheckin" value="true" />

<!--c3p0將建一張名為Test的空表，並使用其自帶的查詢語句進行測試。如果定義了這個參數那么 屬性preferredTestQuery將被忽略。你不能在這張Test表上進行任何操作，它將只供c3p0測試 

使用。Default: null -->

<property name="automaticTestTable" value="Test" />

 

<property name="properties">

<props>

<prop key="clientEncoding">GBK</prop>

<prop key="serverEncoding">CP1252</prop>

<prop key="user">WDS</prop>

 <prop key="password">HelloOracle</prop> 

</props>

</property>

</bean>

 

配置項一定要作為 <bean> 的子元素，而不能做為 <properties> 的子元素，否則不起作用。

 

 

參考：

http://my.oschina.net/tianzimensheng/blog/65225

http://www.cnblogs.com/younes/archive/2012/06/01/2529483.html

http://www.cnblogs.com/safeking/archive/2007/02/01/637067.html