Friday, 17 February 2017

How to check fragmentation status in SQL server



IF OBJECT_ID('tempDB..#bbc') IS NOT NULL
    DROP TABLE #bbc

CREATE TABLE #bbc
    (
      DatabaseName VARCHAR(100) ,
      ObjectName VARCHAR(100) ,
      Index_id INT ,
      indexName VARCHAR(100) ,
      avg_fragmentation_percent FLOAT ,
      Page_Count INT ,
      IndexType VARCHAR(100) ,
      Action_Required VARCHAR(100) DEFAULT 'NA'
    )
go
INSERT  INTO #bbc
        ( DatabaseName ,
          ObjectName ,
          Index_id ,
          indexName ,
          avg_fragmentation_percent ,
 Page_Count,
          IndexType
        )
        EXEC master.sys.sp_MSforeachdb ' USE [?]

SELECT db_name() as DatabaseName, OBJECT_NAME (a.object_id) as ObjectName,

a.index_id, b.name as IndexName,

avg_fragmentation_in_percent,page_count, index_type_desc

-- , record_count, avg_page_space_used_in_percent --(null in limited)

FROM sys.dm_db_index_physical_stats (db_id(), NULL, NULL, NULL, NULL) AS a

JOIN sys.indexes AS b

ON a.object_id = b.object_id AND a.index_id = b.index_id

WHERE b.index_id <> 0 and avg_fragmentation_in_percent <>0'
go

UPDATE  #bbc
SET     Action_Required = 'Rebuild'
WHERE   avg_fragmentation_percent > 30
go

UPDATE  #bbc
SET     Action_Required = 'Reorganize'
WHERE   avg_fragmentation_percent BETWEEN 5 AND 30
go

DELETE #bbc
WHERE Page_Count < 25

go


SELECT  *
FROM    #bbc
WHERE   DatabaseName NOT IN ( 'master', 'model', 'msdb', 'tempdb' ) AND Page_Count > 10000
ORDER BY avg_fragmentation_percent

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