Hi Bruce,
Sometimes we do get these kind of warnings in Event Viewer. Those are generated if the connection between CMS and CMS database is broken for few seconds. The connection is established once again automatically.
You need to make sure that the CMS is up and running all the time and there is no outage reported. Then these alerts can be ignored. If CMS goes down then we need to consider these alerts and take necessary actions.
Regards,
Hrishikesh