tomcat 自动死掉，有时候运行一天，有时候两三天

tomcat自动死掉，有时候运行一天，有时候两三天，反正不稳定，查看catalina 日志内容如下，那位高手帮忙看看。
是不是tomcat内存不足的原因？

2015-2-4 2:37:01 org.apache.catalina.session.StandardManager stop
严重: Exception unloading session2015-2-4 2:37:01 org.apache.catalina.core.ApplicationContext log
信息: Closing Spring root WebApplicationContext
2015-2-4 2:37:02 org.apache.catalina.core.StandardContext addApplicationListener
信息: The listener "org.springframework.web.context.ContextLoaderListener" is already configured for this context. The duplicate definition has been ignored.
2015-2-4 2:37:02 org.apache.catalina.core.StandardContext addApplicationListener
信息: The listener "com.sun.faces.util.ReflectionUtils$ReflectionUtilsListener" is already configured for this context. The duplicate definition has been ignored.
2015-2-4 2:37:02 org.apache.catalina.core.StandardContext addApplicationListener
信息: The listener "com.sun.faces.config.ConfigureListener" is already configured for this context. The duplicate definition has been ignored.
2015-2-4 2:37:02 org.apache.catalina.core.StandardContext addApplicationListener
信息: The listener "com.sun.faces.application.WebappLifecycleListener" is already configured for this context. The duplicate definition has been ignored.
2015-2-4 2:37:02 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
2015-2-4 2:37:02 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: file [D:\apache-tomcat-6.0.43\webapps\ROOT\WEB-INF\classes\com\qmg\action\LabelAction.class]; nested exception is java.io.IOException: 存储空间不足，无法处理此命令。
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:237)
at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:204)
at org.springframework.context.annotation.ComponentScanBeanDefinitionParser.parse(ComponentScanBeanDefinitionParser.java:84)
at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:73)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1335)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1325)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:135)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:93)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:143)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:178)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:149)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:124)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:93)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:130)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:467)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:397)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4210)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4709)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1284)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1382)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1392)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1656)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1665)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1645)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: 存储空间不足，无法处理此命令。
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:220)
at org.springframework.asm.ClassReader.a(Unknown Source)
at org.springframework.asm.ClassReader.<init>(Unknown Source)
at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:48)
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:80)
at org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:101)
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:213)
... 33 more
2015-2-4 2:37:02 org.apache.catalina.core.StandardContext start
严重: Error listenerStart
2015-2-4 2:37:02 org.apache.catalina.core.StandardContext start
严重: Context [] startup failed due to previous errors