Sharepoint 2010 Error Message Event ID: 5555

Event ID: 5555
Error message: Failure trying to synch web application 7b5e3e5c-5e0d-4022-80f2-641c164d2e2f, ContentDB d8c0cca7-68ba-4779-8c7e-72640f0bf1ab  Exception message was Microsoft.Office.Server.UserProfiles.UserProfileApplicationNotAvailableException: No User Profile Application available to service the request. Contact your farm administrator.
   at Microsoft.Office.Server.Administration.UserProfileApplicationProxy.get_ApplicationProperties()
   at Microsoft.Office.Server.Administration.UserProfileApplicationProxy.get_PerfmonInstanceHandle()
   at Microsoft.Office.Server.UserProfiles.ContentDBSynchronizer..ctor(ELogType logType, SPContentDatabase cdb, SPJobState jobState)
   at Microsoft.Office.Server.UserProfiles.WSSProfileSyncJob.Execute()

Solution:
調整 Timer Service Recycle 的執行時間。

翻到第二頁，找到 Timer Service Recycle

Reference: http://www.sysadminsblog.com/microsoft/event-5555-no-user-profile-application-available-to-service-the-request/