C3P0报错

C3P0报错

异常信息：

2013-04-28 11:54:48 [org.hibernate.util.JDBCExceptionReporter]-[ERROR] An attempt by a client to checkout a Connection has timed out.
[Cause: sourcepool.TimeoutException: internal -- timeout at awaitAcquire()sourcepool.BasicResourcePool.awaitAcquire(BasicResourcePool.java:925)sourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:207)hange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:232)hange.v2.Connection(PoolBackedDataSource.java:94)hange.v2.Connection(ComboPooledDataSource.java:521)at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:113)at org.springframework.jdbc.Connection(TransactionAwareDataSourceProxy.java:109)at Connection(LocalDataSourceConnectionProvider.java:81)at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:76)at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1933)at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1216)at wSessionFactory(LocalSessionFactoryBean.java:805)at hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:745)at hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:134)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1175)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1145)at org.springframework.beans.factory.ateBean(AbstractAutowireCapableBeanFactory.java:427)at org.springframework.beans.factory.support.Object(AbstractBeanFactory.java:251)at org.springframework.beans.factory.Singleton(DefaultSingletonBeanRegistry.java:144)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:248)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:160)at org.springframework.beans.factory.solveReference(BeanDefinitionValueResolver.java:261)at org.springframework.beans.factory.solveValueIfNecessary(BeanDefinitionValueResolver.java:109)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1073)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:835)at org.springframework.beans.factory.ateBean(AbstractAutowireCapableBeanFactory.java:423)at org.springframework.beans.factory.support.Object(AbstractBeanFactory.java:251)at org.springframework.beans.factory.Singleton(DefaultSingletonBeanRegistry.java:144)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:248)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:160)at org.springframework.beans.factory.solveReference(BeanDefinitionValueResolver.java:261)at org.springframework.beans.factory.solveValueIfNecessary(BeanDefinitionValueResolver.java:109)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1073)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:835)at org.springframework.beans.factory.ateBean(AbstractAutowireCapableBeanFactory.java:423)at org.springframework.beans.factory.support.Object(AbstractBeanFactory.java:251)at org.springframework.beans.factory.Singleton(DefaultSingletonBeanRegistry.java:144)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:248)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:164)at org.springframework.aop.Advice(AbstractBeanFactoryPointcutAdvisor.java:77)at org.springframework.aop.aspectj.AspectJProxyUtils.makeAdvisorChainAspectJCapableIfNecessary(AspectJProxyUtils.java:49)at org.springframework.aop.aspectj.dAdvisors(AspectJAwareAdvisorAutoProxyCreator.java:98)at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:90)at org.springframework.aop.framework.AdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:69)at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:296)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:314)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1154)at org.springframework.beans.factory.ateBean(AbstractAutowireCapableBeanFactory.java:427)at org.springframework.beans.factory.support.Object(AbstractBeanFactory.java:251)at org.springframework.beans.factory.Singleton(DefaultSingletonBeanRegistry.java:144)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:248)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:160)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:279)at t.fresh(AbstractApplicationContext.java:360)at org.ateWebApplicationContext(ContextLoader.java:241)at org.t.ContextLoader.initWebApplicationContext(ContextLoader.java:184)at org.tInitialized(ContextLoaderListener.java:49)at com.officeFrame.web.tInitialized(OfficeListener.java:29)at org.StandardContext.listenerStart(StandardContext.java:4135)at org.StandardContext.start(StandardContext.java:4630)at org.ContainerBase.addChildInternal(ContainerBase.java:791)at org.ContainerBase.addChild(ContainerBase.java:771)at org.StandardHost.addChild(StandardHost.java:546)at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)at org.ContainerBase.start(ContainerBase.java:1053)at org.StandardHost.start(StandardHost.java:785)at org.ContainerBase.start(ContainerBase.java:1045)at org.StandardEngine.start(StandardEngine.java:445)at org.StandardService.start(StandardService.java:519)at org.StandardServer.start(StandardServer.java:710)at org.apache.catalina.startup.Catalina.start(Catalina.java:581)flect.NativeMethodAccessorImpl.invoke0(Native Method)flect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)flect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at flect.Method.invoke(Method.java:597)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
]
2013-04-28 11:55:59 [org.hibernate.util.JDBCExceptionReporter]-[ERROR] An attempt by a client to checkout a Connection has timed out.
[Cause: sourcepool.TimeoutException: internal -- timeout at awaitAcquire()sourcepool.BasicResourcePool.awaitAcquire(BasicResourcePool.java:925)sourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:207)hange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:232)hange.v2.Connection(PoolBackedDataSource.java:94)hange.v2.Connection(ComboPooledDataSource.java:521)at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:113)at org.springframework.jdbc.Connection(TransactionAwareDataSourceProxy.java:109)at Connection(LocalDataSourceConnectionProvider.java:81)at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:76)at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1933)at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1216)at wSessionFactory(LocalSessionFactoryBean.java:805)at hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:745)at hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:134)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1175)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1145)at org.springframework.beans.factory.ateBean(AbstractAutowireCapableBeanFactory.java:427)at org.springframework.beans.factory.support.Object(AbstractBeanFactory.java:251)at org.springframework.beans.factory.Singleton(DefaultSingletonBeanRegistry.java:144)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:248)at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:160)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:276)at t.fresh(AbstractApplicationContext.java:360)at org.ateWebApplicationContext(ContextLoader.java:241)at org.t.ContextLoader.initWebApplicationContext(ContextLoader.java:184)at org.tInitialized(ContextLoaderListener.java:49)at com.officeFrame.web.tInitialized(OfficeListener.java:29)at org.StandardContext.listenerStart(StandardContext.java:4135)at org.StandardContext.start(StandardContext.java:4630)at org.ContainerBase.addChildInternal(ContainerBase.java:791)at org.ContainerBase.addChild(ContainerBase.java:771)at org.StandardHost.addChild(StandardHost.java:546)at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)at org.ContainerBase.start(ContainerBase.java:1053)at org.StandardHost.start(StandardHost.java:785)at org.ContainerBase.start(ContainerBase.java:1045)at org.StandardEngine.start(StandardEngine.java:445)at org.StandardService.start(StandardService.java:519)at org.StandardServer.start(StandardServer.java:710)at org.apache.catalina.startup.Catalina.start(Catalina.java:581)flect.NativeMethodAccessorImpl.invoke0(Native Method)flect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)flect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)at flect.Method.invoke(Method.java:597)at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
]

配置文件：

	<!-- 测试库1 --><bean id="c3pomainDataSource"   class=&#hange.v2.c3p0.ComboPooledDataSource">   <property name="driverClass" value="oracle.jdbc.OracleDriver"/><property name="jdbcUrl" value="jdbc:oracle:thin:@10.1.20.30:1521:cuctest"/><property name="user" value="officetest"/>   <property name="password" value="officetest"/>   <property name="maxPoolSize" value="30"/>   <property name="minPoolSize" value="10"/>   <property name="initialPoolSize" value="10"/>   <property name="maxIdleTime" value="30"/><property name="idleConnectionTestPeriod" value="30"/><property name="checkoutTimeout" value="7000"/></bean>

有一个线上环境使用的是c3p0数据库，为外部提供接口服务。最近访问压力增大后台tomcat的日志里面频繁出现