[Troubleshooting] Failed to connect to specified database.  The extension operation aborted due to an internal error in FIM Synchronization Service:

http://social.technet.microsoft.com/wiki/contents/articles/17367.troubleshooting-failed-to-connect-to-specified-database-the-extension-operation-aborted-due-to-an-internal-error-in-fim-synchronization-service.aspx