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SQL Server 2008
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Rebuild and organize indexes based on...
Rebuild and organize indexes based on page_count
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Dung Dinh
Dung Dinh
Posted Tuesday, February 19, 2013 1:58 AM
SSC-Enthusiastic
Group: General Forum Members
Last Login: Friday, May 03, 2013 8:54 AM
Points: 113,
Visits: 890
Hi all,
I have a job weekly, it runs on Sunday. The purpose is REBUILD/REORGANIZE all indexes in my database.
If avg_fragmentation_in_percent > 5 and <=30% Then REORGANIZE
If avg_fragmentation_in_percent > 30% Then REBUILD
However, I saw the several indexes are not impacted by this job. I know that SQL engine will not do anything in case page_count of an index is small. But does anyone know what threshold of page_count SQL Engine will use to rebuil/reorganize indexes?
In my case, I have a index
TableName | IndexName | avg_fragmentation_in_percent | page_count
ProductPromotion | PK_ProductPromotion | 58.33333333 | 12
Thanks,
Post #1421479
GilaMonster
GilaMonster
Posted Tuesday, February 19, 2013 2:12 AM
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Group: General Forum Members
Last Login: Today @ 12:59 PM
Points: 37,640,
Visits: 29,895
The SQL engine has no such threshold (well, other than it can't rebuild a 1 page index). Even with 2 it will run the rebuild/reorg. Probably won't have much if any effect, but it will run it.
Gail Shaw
Microsoft Certified Master: SQL Server 2008, MVP
SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass
Post #1421481
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