What happen with the Log backups if I set the SQL Server clock back? In countries with daylight saving this happens at least once a year. Will the point in time restore with the STOPAT option fail?

Using fn_dump_dblog I see this after setting the clock back two hours.


  • So effectively 7pm happens twice on that day? – George.Palacios Aug 17 '19 at 7:26

A point-in-time restore to an a timestamp that appears twice in the log file will either fail, or arbitrarily select one occurrence of the target time. I don't know which, and it doesn't really matter. You can restore to LSN instead of a timestamp using STOPMARK instead of STOPAT.

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