portal 启动server失败

我装的是portal Express V6.1 系统是XP数据库是 DB2 V9.5。
前一段时间能正常启动portal服务，今天再次启动的时候失败了。
下面是 systemOut.log中的首个错误：
同时我把systemout.log和systemerror.log文件传在附件中，希望朋友们能多多帮助，也希望大家多交流多学习。
[09-2-5 9:30:54:656 CST] 00000015 ServiceLogger I com.ibm.ws.ffdc.IncidentStreamImpl initialize FFDC0009I: FFDC 已打开附带的流文件 E:IBMWebSpherewp_profilelogsffdcWebSphere_Portal_00000015_09.02.05_09.30.54_0.txt
[09-2-5 9:30:54:687 CST] 00000015 ServiceLogger I com.ibm.ws.ffdc.IncidentStreamImpl resetIncidentStream FFDC0010I: FFDC 已关闭附带的流文件 E:IBMWebSpherewp_profilelogsffdcWebSphere_Portal_00000015_09.02.05_09.30.54_0.txt
[09-2-5 9:30:54:687 CST] 00000015 PortletApplic E com.ibm.ws.portletcontainer.management.portlet.PortletApplicationCollaborator activateMBeans EJPPC0201E: 激活类型为 portlet 和 portletapplication 的 MBean 时发生错误。
                                 com.ibm.websphere.management.exception.AdminException: ADMN0005E: 服务无法激活 MBean：类型 PortletApplication、协调程序 [email=com.ibm.ws.portletcontainer.management.portlet.PortletApplicationCollaborator@78b478b4]com.ibm.ws.portletcontainer.management.portlet.PortletApplicationCollaborator@78b478b4[/email]、配置标识 null、描述符 com/ibm/ws/portletcontainer/management/descriptor/xml/PortletApplication.xml。
at com.ibm.ws.management.MBeanFactoryImpl.activateMBean(MBeanFactoryImpl.java:622)
at com.ibm.ws.management.MBeanFactoryImpl.activateMBean(MBeanFactoryImpl.java:347)
at com.ibm.ws.portletcontainer.management.portlet.PortletApplicationCollaborator.activateMBeans(PortletApplicationCollaborator.java:152)
at com.ibm.ws.portletcontainer.runtime.PortletWebAppInitializationCollaborator.startingPortletApplicationCollaborator(PortletWebAppInitializationCollaborator.java:118)
at com.ibm.ws.portletcontainer.runtime.PortletWebAppInitializationCollaborator.starting(PortletWebAppInitializationCollaborator.java:97)
at com.ibm.ws.wswebcontainer.webapp.WebApp.initialize(WebApp.java:280)
at com.ibm.ws.wswebcontainer.webapp.WebGroup.addWebApplication(WebGroup.java:92)
at com.ibm.ws.wswebcontainer.VirtualHost.addWebApplication(VirtualHost.java:157)
at com.ibm.ws.wswebcontainer.WebContainer.addWebApp(WebContainer.java:665)
at com.ibm.ws.wswebcontainer.WebContainer.addWebApplication(WebContainer.java:618)
at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:335)
at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:551)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1303)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1138)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:569)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:817)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:949)
at com.ibm.ws.runtime.component.ApplicationMgrImpl$AppInitializer.run(ApplicationMgrImpl.java:2122)
at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:342)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)
Caused by: javax.management.InstanceAlreadyExistsException: WebSphere:cell=seal,version=6.1.0.15,spec=1.0,name=wpf.war_portletapplication,mbeanIdentifier=null,type=PortletApplication,node=seal,process=WebSphere_Portal
at com.sun.jmx.mbeanserver.RepositorySupport.addMBean(RepositorySupport.java:470)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1428)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:954)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:355)
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:515)
at com.ibm.ws.management.MBeanFactoryImpl.activateMBean(MBeanFactoryImpl.java:494)
... 19 more

附件：

log.rar (14.33 KB)