SQL SERVER 2005索引自動維護

先直接上代碼：

CREATE PROC SHANE_AutoProIndex
AS

DECLARE @tblName VARCHAR(40)
DECLARE @indexID INT
DECLARE @proFlag FLOAT
DECLARE @indexName VARCHAR(40)
DECLARE @sql varchar(200)

DECLARE _tblCur CURSOR FOR SELECT TblName FROM AutoProIndexModel
OPEN _tblCur
FETCH NEXT FROM _tblCur INTO @tblName
WHILE @@FETCH_STATUS = 0
BEGIN
PRINT 'Now is Proing: ' + @tblName
--PRINT @tblName

 DECLARE _indexCur CURSOR FOR SELECT index_id, avg_fragmentation_in_percent
 FROM sys.dm_db_index_physical_stats(DB_ID(N'AdventureWorks'), OBJECT_ID(@tblName), NULL, NULL, 'LIMITED')

 OPEN _indexCur
 FETCH NEXT FROM _indexCur INTO @indexID, @proFlag

 WHILE @@FETCH_STATUS = 0
 BEGIN
   PRINT 'The index id is: ' + CAST(@indexID AS VARCHAR(10)) + ', avg_fra_in_percent is: ' + CAST(@proFlag AS VARCHAR(20))
   IF @proFlag > 5 AND @proFlag < 30
    BEGIN
     SELECT @indexName = name FROM sys.indexes WHERE [object_id] = OBJECT_ID(@tblName) AND index_id = @indexID
     print @indexName + ' must be  REORGANIZE'
     SET @sql = 'ALTER INDEX ' + @indexName + ' ON ' + @tblName + ' REORGANIZE'
     EXEC(@sql)
PRINT @SQL
    END
   ELSE IF @proFlag > 30
    BEGIN
     SELECT @indexName = name FROM sys.indexes WHERE [object_id] = OBJECT_ID(@tblName) AND index_id = @indexID
     print @indexName + ' must be  REBUILD'
     SET @sql = 'ALTER INDEX ' + @indexName + ' ON ' + @tblName + ' REBUILD'
     EXEC(@sql)
PRINT @SQL
    END
   FETCH NEXT FROM _indexCur INTO @indexID, @proFlag
 END

 CLOSE _indexCur
 DEALLOCATE _indexCur

print ''
 FETCH NEXT FROM _tblCur INTO @tblName
END

CLOSE _tblCur
DEALLOCATE _tblCur

該PROC中有張表AutoProIndexModel，這張表裏面存儲的是需要維護索引的幾張表名。

該PROC流程如下：

1.先使用遊標讀取AutoProIndexModel中的需要整理的表的信息，進行循環

2.使用DMF，sys.dm_db_index_physical_stats得出每張表中每個索引的碎片情況後，根據avg_fragmentation_in_percent 字段的值進行具體的操作

3.如果avg_fragmentation_in_percent 在5-30之間進行索引重新組織，>30則索引重建。

新建個計劃任務後，定時調用該存儲過程就可以實現索引的自動維護了。