Temporary database tempdb is created whenever the Server is restarted. So you can know when Server was restarted by knowing the creation date of the tempdb EXEC sp_helpdb tempdb select crdate from master..sysdatabases where name='tempdb'...(<a href="http://sqlserver-qa.net/blogs/t-sql/archive/2008/06/09/4442.aspx">read more</a>)<img src="http://sqlserver-qa.net/aggbug.aspx?PostID=4442" width="1" height="1">