導(dǎo)讀:1建站知識本篇文章小編為大家介紹，關(guān)于重新組織和重新生成索引sp_RefreshIndex的介紹。需要的朋友參考下百度seo網(wǎng)站優(yōu)化網(wǎng)站seo優(yōu)化。

開始：

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在上周，客戶反映一個(gè)系統(tǒng)問題，當(dāng)處理大量數(shù)據(jù)的時(shí)候，出現(xiàn)網(wǎng)絡(luò)超時(shí)。后來，我們跟蹤測試，發(fā)現(xiàn)是由于索引碎片多而引起的網(wǎng)絡(luò)超時(shí)。

解決方法，自然是重新組織和重新生成索引。在這里，我寫了一個(gè)存儲過程sp_RefreshIndex來實(shí)現(xiàn)。

存儲過程sp_RefreshIn網(wǎng)站建設(shè)多少錢dex:

復(fù)制代碼 代碼如下:

use mastergoif object_id('sp_RefreshIndex') Is not null Drop Proc sp_RefreshIndexGocreate proc sp_RefreshIndex ( @Reorganize_Fragmentation_Percent smallint = 5 -- 當(dāng)邏輯碎片百分比 > 5% 重新組織索引 ,@Rebuild_Fragmentation_Percent smallint = 30 -- 當(dāng)邏輯碎片百分比 > 30% 重新生成索引)asbegin /* 調(diào)用方法：.針對當(dāng)前實(shí)例所有數(shù)據(jù)庫： exec sys.sp_MSforeachdb 'use ?;exec sp_RefreshIndex'.針對當(dāng)前數(shù)據(jù)庫： exec sp_RefreshIndex */ --對系統(tǒng)數(shù)據(jù)庫不作重新組織索引和重新生成索引 if (db_name() in ('ma網(wǎng)站優(yōu)化seo培訓(xùn)ster','model','msdb','tempdb')) return; --如果邏輯碎片（索引中的無序頁）的百分比 <= 5% ，就不作重新組織索引和重新生成索引 if not exists(select 1 from sys.dm_db_index_physical_stats(db_id(),null,null,null,null) a where a.index_id>0 and a.avg_fragmentation_in_percent > @Reorganize_Fragmentation_Percent) return print replicate('-',60)+char(13)+char(10)+replicate(' ',14)+N'對數(shù)據(jù)庫 '+quotename(db_name())+N' 進(jìn)行索引優(yōu)化'+replicate(' ',20)+char(13)+char(10) declare @sql nvarchar(2000),@str nvarchar(2000) declare cur_x cursor for select 'alter index '+quotename(a.name)+' on '+quotename(object_schema_name(網(wǎng)seo優(yōu)化趨勢a.object_id))+'.'+quotename(object_name(a.object_id))+case when b.avg_fragmentation_in_percent<=@Rebuild_Fragmentation_Percent then ' reorganize;'else ' rebuild;'end as [sql] ,case when b.avg_fragmentation_in_percent<=@Rebuild_Fragmentation_Percent then N'重新組織索引：' else N'重新生成索引：'end +quotename(object_schema_name(a.object_id))+'.'+quotename(object_name(a.object_id))+'.'+quotename(a.name) as [str] from sys.indexes a inner join sys.dm_db_index_physical_stats(db_id(),null,null,null,null) b on b.object_id=a.object_id and b.index_id=a.index_id where a.index_id>0 and b.avg_fragmentation_in_percent > @Reorganize_Fragmentation_Percent order by object_name(a.object_id),a.index_id open cur_x fetch next from cur_x into @sql,@str while (@@fetch_status = 0) begin exec(@sql) print @str fetch next from cur_x into @sql,@str end close cur_x deallocate cur_x endgoexec sp_ms_marksystemobject 'sp_RefreshIndex'go

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