Diagnostic Server is not writing to Playback database
Diagnostic Server (DS) has not been sending data to the playback database as no history is visible in the client. There are no errors appearing in the client about connection issues, and nothing has been changed on either the DS or the database.
Analysis of the support bundle shows that a lock is held on the playback read connection by a thread that no longer exists. Looking back through the log shows that playback data retrieval has failed prior to this point.
Restart Diagnostic Server
Waiting for fix in a future release of Spotlight on SQL Server Enterprise