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Query Help..

Author

Topic

Sonu619
Posting Yak Master

202 Posts

Posted - 2012-11-07 : 12:37:52

I need help to write a sql query, Here is my Query
to find out Fragmentation Level is more than 25% in the database

DECLARE @DBId INT
SET @DBId = DB_ID('ADVENTUREWORK')

SELECT DISTINCT O.name,PS.index_type_desc,b.name, ps.avg_fragmentation_in_percent
FROM sys.dm_db_index_physical_stats (@DBId, NULL, NULL, NULL, NULL) AS ps
INNER JOIN sys.indexes AS b ON ps.OBJECT_ID = b.OBJECT_ID
AND ps.index_id = b.index_id
INNER JOIN sys.objects O ON b.object_id = O.object_id
WHERE ps.database_id = DB_ID()
AND ps.avg_fragmentation_in_percent>25

Lets say if i receive 20 index or so. I need help to write a query to Rebuild all index where Fragmentation level is more than 25%.

2) I would like to create a job, its a good idea to run this job once a day or twice?

Thanks for help...

jimf
Master Smack Fu Yak Hacker

2875 Posts

Posted - 2012-11-07 : 12:49:16

I use tara Kizer's script

http://weblogs.sqlteam.com/tarad/archive/2007/11/27/60415.aspx

Jim

Everyday I learn something that somebody else already knew

Sonu619
Posting Yak Master

202 Posts

Posted - 2012-11-08 : 13:34:57

SELECT DISTINCT O.name,PS.index_type_desc,b.name, ps.avg_fragmentation_in_percent
FROM sys.dm_db_index_physical_stats (@DBId, NULL, NULL, NULL, NULL) AS ps
INNER JOIN sys.indexes AS b ON ps.OBJECT_ID = b.OBJECT_ID
AND ps.index_id = b.index_id
INNER JOIN sys.objects O ON b.object_id = O.object_id
WHERE ps.database_id = DB_ID()
AND ps.avg_fragmentation_in_percent>25

Here is the query i am using to find out which index has fragmentation > 25. I have few tables that has 50 fragmentation, if i run the script or do manullay rebuild the index it doesn't affect fragmentation is still same 50%. Please someone guide me why? or how i can fix this?

Thanks for help...

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