# MSSQL instance shuts down error 17054

Some of my mssql instances shut down after a while. After enabled logging I was able to get a error message why the services are down:

2010-06-23 15:49:53.34 Server      Server resumed execution after being idle 33570 seconds: user activity awakened the server. This is an informational message only. No user action is required.
2010-06-24 01:04:48.84 spid1s      Server resumed execution after being idle 32039 seconds. Reason: timer event.
2010-06-24 03:14:42.14 Server      SQL Server is terminating because of a system shutdown. This is an informational message only. No user action is required.
2010-06-24 03:15:56.35 spid7s      Server resumed execution after being idle 6949 seconds: user activity awakened the server. This is an informational message only. No user action is required.
2010-06-24 03:15:59.01 spid7s      Fehler: 17054, Schweregrad: 16, Status: 1.
2010-06-24 03:15:59.01 spid7s      The current event was not reported to the Windows Events log. Operating system error = (null). You may need to clear the Windows Events log if it is full.


I can't seem to google the meaning of error 17054? What does it mean?

How can I prevent the instance services to shutdown? The problem is, that the services do not start up automatically after such error, altough the startup type of the services are set to automatically.
I could program another service that watches the instance services and simplies starts them in case they are down. But I'd rather fix my problem with the MSSQL Server