tomcat经常停止服务
请高手看看是怎么回事儿，这个tomcat 用了很久了，就是最近一段时间，总是莫名停止服务，重启tomcat后又恢复正常。信息台显示信息：
2014-04-04 15:54:26,921
org.jasig.cas.web.flow.TicketGrantingTicketExist
sAction - Action 'TicketGrantingTicketExistsAction' completed execution;
result
is 'noTicketGrantingTicketExists'
2014-04-04 15:54:27,468
org.jasig.cas.web.flow.GatewayRequestCheckAction
- Action 'GatewayRequestCheckAction' beginning execution
2014-04-04 15:54:27,468
org.jasig.cas.web.flow.GatewayRequestCheckAction
- Action 'GatewayRequestCheckAction' completed execution; result is
'authentica
tionRequired'
2014-04-04 15:54:28,031
org.jasig.cas.web.flow.viewLoginAction - Action
'viewLoginAction' beginning execution
2014-04-04 15:54:28,046
org.jasig.cas.web.flow.viewLoginAction - Action
'viewLoginAction' completed execution; result is 'standard'
2014-4-4 15:54:30 org.apache.tomcat.util.net.TcpWorkerThread runIt
严重: Remote Host /172.16.20.187 SocketException: Software caused
connection abo
rt: recv failed
2014-4-4 15:54:32 org.apache.tomcat.util.net.TcpWorkerThread runIt
严重: Remote Host /192.168.2.13 SocketException: Software caused
connection abor
t: recv failed
2014-04-04 15:54:33,921
org.jasig.cas.web.flow.HasServiceCheckAction - A
ction 'HasServiceCheckAction' completed execution; result is
'authenticatedButNo
Service'
日志文件信息：
2014-04-04 15:53:51,343 org.apache.struts.actions.DispatchAction - Dispatch to method allSelect returned an exception
java.lang.reflect.InvocationTargetException
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:585)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:106)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.jasig.cas.client.web.filter.TicketValidationFilter.doFilterInternal(TicketValidationFilter.java:158)
at org.jasig.cas.client.web.filter.AbstractCasFilter.doFilter(AbstractCasFilter.java:100)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:138)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.jasig.cas.client.web.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:112)
at org.jasig.cas.client.web.filter.AbstractCasFilter.doFilter(AbstractCasFilter.java:100)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:138)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.OutOfMemoryError: Java heap space
2014-04-04 16:12:09,953 org.apache.axis.configuration.EngineConfigurationFactoryServlet - Unable to find config file.Creating new servlet engine config file:
压力过大出现异常导致的吧， 关键字 OutOfMemoryError
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