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 Shrink Database (SQL 2008)
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sqlmjkm
Starting Member

14 Posts

Posted - 02/27/2014 :  08:33:55  Show Profile  Reply with Quote
Hello. When doing a shrink database - Under "Available free space" - What percentage % free would you say is in the danger zone? What are the ranges you think are acceptable and at what % will we start to see performance issues.

Also... is there documentation on this anywhere?

Thank you!

djj55
Constraint Violating Yak Guru

USA
333 Posts

Posted - 02/27/2014 :  11:14:06  Show Profile  Reply with Quote
It depends on the data. Do you have a lot of inserts?

Performance may be hurt if the database needs more room and expands often.

djj
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tkizer
Almighty SQL Goddess

USA
36997 Posts

Posted - 03/02/2014 :  18:30:03  Show Profile  Visit tkizer's Homepage  Reply with Quote
Only do a shrink when you know you don't need that extra space for a very long time. When I do shrink a database, I leave at least 10% of free space but typically 20%. I do not shrink just because I have more than 20%. I shrink only on rare occasions, such as when we do a massive delete and need that space for some other database.

% has nothing to do with performance except as djj55 mentions regarding having to expand the file.


Tara Kizer
SQL Server MVP since 2007
http://weblogs.sqlteam.com/tarad/
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