portalserver 日志错误 帮忙分析一下

JCRCFLLoggerI E com.ibm.icm.ts.tss.JCRCFLLoggerImpl com.ibm.icm.ts.tss.app.Janitor.cleanupLibraryServer [java.lang.ThreadGroup[name=icmciWorkManager: icmjcrear,maxpri=10]]: Error getting the library server. com.ibm.icm.ts.tss.ls.DatabaseException: Error removing expired index claims from the database.
    at com.ibm.icm.ts.tss.ls.LibraryServerImpl.removeExpiredIndexClaims(LibraryServerImpl.java(Compiled Code))
    at com.ibm.icm.ts.tss.ls.LibraryServerImpl.state(LibraryServerImpl.java(Compiled Code))
    at com.ibm.icm.ts.tss.app.Janitor.cleanupLibraryServer(Janitor.java(Compiled Code))
    at com.ibm.icm.ts.tss.app.JanitorService.cleanupLibraryServer(JanitorService.java(Inlined Compiled Code))
    at com.ibm.icm.ts.tss.app.JanitorService.access$000(JanitorService.java(Inlined Compiled Code))
    at com.ibm.icm.ts.tss.app.JanitorService$Notifiee.onEvent(JanitorService.java(Compiled Code))
    at com.ibm.icm.ts.act.ActivityImpl$ManagerImpl$ActivityRunner.runActivity(ActivityImpl.java(Compiled Code))
    at com.ibm.icm.ts.act.ActivityImpl$ManagerImpl$ActivityRunner.run(ActivityImpl.java:303)
    at com.ibm.hrl.workmanager.RunnableWrapper.run(RunnableWrapper.java:44)
    at com.ibm.hrl.workmanager.impl.was.WasWork.run(WasWork.java:75)
    at com.ibm.ws.asynchbeans.J2EEContext$RunProxy.run(J2EEContext.java:258)
    at java.security.AccessController.doPrivileged1(Native Method)
    at java.security.AccessController.doPrivileged(AccessController.java(Compiled Code))
    at javax.security.auth.Subject.doAs(Subject.java:477)
    at com.ibm.websphere.security.auth.WSSubject.doAs(WSSubject.java:118)
    at com.ibm.ws.asynchbeans.J2EEContext$DoAsProxy.run(J2EEContext.java:325)
    at java.security.AccessController.doPrivileged1(Native Method)
    at java.security.AccessController.doPrivileged(AccessController.java(Compiled Code))
    at com.ibm.ws.asynchbeans.J2EEContext.run(J2EEContext.java:709)
    at com.ibm.ws.asynchbeans.WorkWithExecutionContextImpl.go(WorkWithExecutionContextImpl.java:218)
    at com.ibm.ws.asynchbeans.ABWorkItemImpl.run(ABWorkItemImpl.java:154)
    at java.lang.Thread.run(Thread.java:571)