部署在tomcat上的应用访问一段时间后死掉

2011-04-11 11:08:01,281 [Thread-18] [org.springframework.web.context.support.XmlWebApplicationContext] [INFO] - Closing org.springframework.web.context.support.XmlWebApplicationContext@c00025: display name [Root WebApplicationContext]; startup date [Mon Apr 11 08:52:00 CST 2011]; root of context hierarchy

2011-04-11 11:08:01,359 [Thread-18] [org.springframework.beans.factory.support.DefaultListableBeanFactory] [INFO] - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@178dc08: defining beans [userLoginAction,companyAction,staffAction,newsNoticesAction,warrantyAction,claimsAction,memberCostAction,custmoerVisitAction,businessAction,peccancyAction,remindAction,carAction,customerAction,peccancyCostAction,deliveryAction,quoteAction,customerVisitAction,departmentAction,appointmentAction,inspectionAction,salesmanAction,helpAction,financeAction,webSiteAction,memberAction,serveCardAction,carWashAction,otherServeAction,placeholderConfig,cacheAdministrator,dataSource,nativeJdbcExtractor,lobHandler,sessionFactory,transactionManager,txAdvice,org.springframework.aop.config.internalAutoProxyCreator,allManagerMethod,org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor,abstractDao,baseDao,userLoginService,companyService,carService,customerService,peccancyCostService,peccancyService,staffService,deliveryService,businessService,quoteService,deparmentService,appointmentService,inspectionService,salesmanService,helpService,insuranceService,claimService,financeService,memberService,serveCardService,carWashService,washCardCheckService,webSiteService,otherServeService]; root of factory hierarchy

2011-04-11 11:08:01,687 [Thread-18] [org.springframework.orm.hibernate3.LocalSessionFactoryBean] [INFO] - Closing Hibernate SessionFactory

2011-04-11 11:08:01,718 [Thread-18] [org.hibernate.impl.SessionFactoryImpl] [INFO] - closing

2011-04-11 11:08:01,750 [http-8080-9] [com.mchange.v2.resourcepool.BasicResourcePool] [INFO] - com.mchange.v2.resourcepool.BasicResourcePool@152853d -- an attempt to checkout a resource was interrupted, because the pool is now closed. [Thread: http-8080-9]

2011-04-11 11:08:01,828 [http-8080-16] [com.mchange.v2.resourcepool.BasicResourcePool] [INFO] - com.mchange.v2.resourcepool.BasicResourcePool@152853d -- an attempt to checkout a resource was interrupted, because the pool is now closed. [Thread: http-8080-16]

用的是ssh 框架 tomcat服务启动后访问几个小时后 就会出现这种情况 应用的静态页面能访问的 就是无法登陆了 重启tomcat又好了

请高手指教啊