所以，我想在一个@Transactional下进行32次写操作。我将maxActive连接设置为“100”，将maxIdle设置为“50”（我认为相当高），maxTimeout设置为150000并且removeAbandonedTimeout = 3000
这是tomcat配置：
driverClassName="com.mysql.jdbc.Driver" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" testWhileIdle="true" validationQuery="SELECT 1" validationInterval="30000" timeBetweenEvictionRunsMillis="30000" removeAbandoned="true" removeAbandonedTimeout="3000" url="jdbc:mysql://127.0.0.1:3306/cas?autoReconnect=true"/>
这是java代码：
@Override
@Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED, timeout = 3600)
public void updateDBFromMap(String clientCode, String date, String time, EClientParameterMaintenance ebtData) throws Exception {
if (ebtData.getCity() != null && !ebtData.getCity().isEmpty()) {
String tableName;
try {
tableName = maintenanceService.getDailyTableName(clientCode, date, EventBifurcationType.CITY);
for (String cityKey : ebtData.getCity().keySet()) {
dailyFlushDao.updateCity(ebtData.getCity().get(cityKey), tableName, time);
}
} catch (Exception e) {
LOG.error("Exception:", e);
throw e;
}
} .... and 31 more such update operations
这是错误：
- Connection has already been closed.
19:50:56,162 ERROR [FlushServiceImpl] - Exception:
org.springframework.orm.hibernate4.HibernateJdbcException: JDBC exception on Hibernate data access: SQLException for SQL [INSERT INTO fc_p_faclntlms1aoqglwzza0a_20161001 (time_period, prediction_count, footfall_count, unique_footfall_count, time_spent, fence_category_id, property_code, created) VALUES ('1900','2','2','2','60','19','FAPORYLMS1AOMXHHD3K4B',now()) ON DUPLICATE KEY UPDATE prediction_count=prediction_count+2, footfall_count=footfall_count+2,unique_footfall_count=unique_footfall_count+2,time_spent=time_spent+60;]; SQL state [null]; error code [0]; could not prepare statement; nested exception is org.hibernate.exception.GenericJDBCException: could not prepare statement
at org.springframework.orm.hibernate4.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:170)
at org.springframework.orm.hibernate4.HibernateExceptionTranslator.convertHibernateAccessException(HibernateExceptionTranslator.java:57)
at org.springframework.orm.hibernate4.HibernateExceptionTranslator.translateExceptionIfPossible(HibernateExceptionTranslator.java:44)
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59)
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)
at com.focus.cas.service.aspect.CASAspectHandler.logMethodExecutionTime(CASAspectHandler.java:122)
at com.focus.cas.service.aspect.CASAspectHandler.profile(CASAspectHandler.java:43)
at sun.reflect.GeneratedMethodAccessor103.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:68)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
at com.focus.cas.dbaccess.mysql.flush.impl.DailyFlushDaoImpl$$EnhancerBySpringCGLIB$$1a5b5f55.updateFenceCategoryProperty(<generated>)
at com.focus.cas.service.flush.impl.FlushServiceImpl.updateDBFromMap(FlushServiceImpl.java:1314)
at com.focus.cas.service.flush.impl.FlushServiceImpl$$FastClassBySpringCGLIB$$d877b180.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:267)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
at com.focus.cas.service.flush.impl.FlushServiceImpl$$EnhancerBySpringCGLIB$$f652020f.updateDBFromMap(<generated>)
at com.focus.cas.service.flush.impl.FlushServiceImpl.flush(FlushServiceImpl.java:1046)
at com.focus.cas.service.flush.impl.FlushServiceImpl.access$100(FlushServiceImpl.java:107)
at com.focus.cas.service.flush.impl.FlushServiceImpl$FlushThread.run(FlushServiceImpl.java:1534)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.exception.GenericJDBCException: could not prepare statement
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:196)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:96)
at org.hibernate.engine.query.spi.NativeSQLQueryPlan.performExecuteUpdate(NativeSQLQueryPlan.java:205)
at org.hibernate.internal.SessionImpl.executeNativeUpdate(SessionImpl.java:1310)
at org.hibernate.internal.SQLQueryImpl.executeUpdate(SQLQueryImpl.java:389)
at com.focus.cas.dbaccess.mysql.flush.impl.DailyFlushDaoImpl.updateFenceCategoryProperty(DailyFlushDaoImpl.java:269)
at com.focus.cas.dbaccess.mysql.flush.impl.DailyFlushDaoImpl$$FastClassBySpringCGLIB$$f7b6a91f.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
... 30 more
Caused by: java.sql.SQLException: Connection has already been closed.
at org.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:117)
at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109)
at org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:80)
at com.sun.proxy.$Proxy33.prepareStatement(Unknown Source)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:103)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186)
... 40 more
19:50:56,717 ERROR [TransactionInterceptor] - Application exception overridden by rollback exception
org.springframework.orm.hibernate4.HibernateJdbcException: JDBC exception on Hibernate data access: SQLException for SQL [INSERT INTO fc_p_faclntlms1aoqglwzza0a_20161001 (time_period, prediction_count, footfall_count, unique_footfall_count, time_spent, fence_category_id, property_code, created) VALUES ('1900','2','2','2','60','19','FAPORYLMS1AOMXHHD3K4B',now()) ON DUPLICATE KEY UPDATE prediction_count=prediction_count+2, footfall_count=footfall_count+2,unique_footfall_count=unique_footfall_count+2,time_spent=time_spent+60;]; SQL state [null]; error code [0]; could not prepare statement; nested exception is org.hibernate.exception.GenericJDBCException: could not prepare statement
at org.springframework.orm.hibernate4.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:170)
at org.springframework.orm.hibernate4.HibernateExceptionTranslator.convertHibernateAccessException(HibernateExceptionTranslator.java:57)
at org.springframework.orm.hibernate4.HibernateExceptionTranslator.translateExceptionIfPossible(HibernateExceptionTranslator.java:44)
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59)
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)
at com.focus.cas.service.aspect.CASAspectHandler.logMethodExecutionTime(CASAspectHandler.java:122)
at com.focus.cas.service.aspect.CASAspectHandler.profile(CASAspectHandler.java:43)
at sun.reflect.GeneratedMethodAccessor103.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:68)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
at com.focus.cas.dbaccess.mysql.flush.impl.DailyFlushDaoImpl$$EnhancerBySpringCGLIB$$1a5b5f55.updateFenceCategoryProperty(<generated>)
at com.focus.cas.service.flush.impl.FlushServiceImpl.updateDBFromMap(FlushServiceImpl.java:1314)
at com.focus.cas.service.flush.impl.FlushServiceImpl$$FastClassBySpringCGLIB$$d877b180.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:267)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
at com.focus.cas.service.flush.impl.FlushServiceImpl$$EnhancerBySpringCGLIB$$f652020f.updateDBFromMap(<generated>)
at com.focus.cas.service.flush.impl.FlushServiceImpl.flush(FlushServiceImpl.java:1046)
at com.focus.cas.service.flush.impl.FlushServiceImpl.access$100(FlushServiceImpl.java:107)
at com.focus.cas.service.flush.impl.FlushServiceImpl$FlushThread.run(FlushServiceImpl.java:1534)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.exception.GenericJDBCException: could not prepare statement
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:196)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:96)
at org.hibernate.engine.query.spi.NativeSQLQueryPlan.performExecuteUpdate(NativeSQLQueryPlan.java:205)
at org.hibernate.internal.SessionImpl.executeNativeUpdate(SessionImpl.java:1310)
at org.hibernate.internal.SQLQueryImpl.executeUpdate(SQLQueryImpl.java:389)
at com.focus.cas.dbaccess.mysql.flush.impl.DailyFlushDaoImpl.updateFenceCategoryProperty(DailyFlushDaoImpl.java:269)
at com.focus.cas.dbaccess.mysql.flush.impl.DailyFlushDaoImpl$$FastClassBySpringCGLIB$$f7b6a91f.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
过去7天为此而战。在我的案例中，几乎所有的解决方案都失败了。
答案 0 :(得分：0)
您使用的设置将removeAbandonedTimeout设置为3秒。要查找您在https://tomcat.apache.org/tomcat-7.0-doc/jdbc-pool.html使用的 org.apache.tomcat.jdbc.pool.DataSourceFactory 的文档，应将此属性设置为应用程序可能具有的运行时间最长的查询。来自文档，
removeAbandoned
（布尔值）标记，如果它们超过removeAbandonedTimeout，则删除已放弃的连接。如果设置为true，则连接被视为已放弃并且如果已使用的连接时间超过removeAbandonedTimeout，则可以进行删除。将此设置为true可以从未能关闭连接的应用程序恢复数据库连接。另请参见logAbandoned默认值为false。removeAbandonedTimeout
（int）可以删除放弃（使用中）连接之前的超时（以秒为单位）。默认值为60（60秒）。该值应设置为应用程序可能具有的最长运行查询。
因此，您应该检查应用程序使用的任何查询所花费的最长时间，并相应地设置它。