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自动维护索引--联机重建或组织索引 [sql] 最近老是发现 以前写的 自动维护索引的 作业 报错。提示： 不能对 索引 '某某' 执行联机操作，因为该索引包含数据类型为 text、ntext、image、varchar(max)、nvarchar(max)、varbinary(max)、xml 或大型 CLR 类型的列 'additional_parameters'。对于非聚集索引，该列可能是索引的包含列。对于聚集索引，它可能是该表的任何列。如果使用 DROP_EXISTING，则该列可能是新索引或旧索引的一部分。该操作必须离线执行。 于是 花了 一上午时间将以前的写法 改写了一下。 ----索引维护 联机重建或组织索引 www.2cto.com CREATE procedure [pr_auto_indexdefrag_online] as begin set nocount on declare @Db_name nvarchar(256) ,@SchemaName nvarchar(256) ,@TableName Nvarchar(256) ,@IndexName Nvarchar(512) ,@PctFrag decimal ,@Defrag nvarchar(max) if exists(select 1 from sys.objects where object_id =object_id(N'#tmp')) Drop table #tmp; if exists(select 1 from sys.objects where object_id =object_id(N'#tmp_sub')) Drop table #tmp_sub; www.2cto.com create table #tmp_sub(database_id int,dbname nvarchar(32),tablename nvarchar(128),index_type_desc nvarchar(128)) create table #tmp(database_id int,dbname nvarchar(256),tablename nvarchar(256),indexname nvarchar(256),type_desc nvarchar(128),schemaname nvarchar(256),avgfragment decimal) ------找出 text、ntext、image、varchar(max)、nvarchar(max)、varbinary(max)、xml 或大型 CLR 类型的列 exec sp_MSforeachdb 'insert into #tmp_sub(database_id,dbname,tablename,index_type_desc) select distinct c.database_id,''?'' dbname,b.name,''CLUSTERED'' from ?.sys.dm_db_index_physical_stats(DB_ID(''?''),NULL,NULL,NULL,''SAMPLED'') as a join ?.sys.tables as b on a.object_id=b.object_id join sys.databases as c on a.database_id=c.database_id join ?.sys.all_columns d on d.object_id =a.object_id join ?.sys.sysobjects e on d.object_id=e.id and e.xtype=''U'' join ?.sys.types f on d.user_type_id=f.user_type_id where b.type_desc=''USER_TABLE'' and b.is_ms_shipped=0 and (d.max_length =-1 OR (f.name in (''image'',''text'',''ntext'',''xml'',''varbinary'',''binary'')))' www.2cto.com ----找出 所有库中的索引 exec sp_MSforeachdb 'insert into tmp(database_id,dbname,tablename,indexname,type_desc,schemaname,avgfragment) select distinct d.database_id,''?'' dbname,c.name,b.name,b.type_desc,e.name,a.avg_fragmentation_in_percent from ?.sys.dm_db_index_physical_stats(DB_ID(''?''),NULL,NULL,NULL,''SAMPLED'') as a join ?.sys.indexes as b on a.object_id=b.object_id and a.index_id=b.index_id join ?.sys.tables as c on a.object_id=c.object_id join sys.databases as d on a.database_id=d.database_id join ?.sys.schemas as e on c.schema_id=e.schema_id join ?.sys.sysobjects f on c.object_id=f.id join ?.sys.all_columns g on f.id=g.object_id join ?.sys.types h on g.user_type_id=h.user_type_id where a.avg_fragmentation_in_percent >20 and c.type=''U'' and f.xtype=''U'' and c.is_ms_shipped=0 ' www.2cto.com declare frg_cur cursor for select dbname,tablename,indexname, schemaname,avgfragment from #tmp where not exists (select 1 from #tmp_sub b where database_id=b.database_id and tablename=b.tablename and type_desc=b.index_type_desc) open frg_cur fetch next from frg_cur into @Db_name,@TableName,@IndexName,@SchemaName,@PctFrag while @@FETCH_STATUS=0 begin if @PctFrag between 20.0 and 40.0 begin set @Defrag=N' ALTER INDEX '+@IndexName+' ON'+@Db_name+'.'+@SchemaName+'.'+ @TableName +' REORGANIZE'--重新组织索引页不删除索引 EXEC SP_EXECUTESQL @Defrag end www.2cto.com else if @PctFrag>40.0 begin SET @Defrag=N' ALTER INDEX '+@IndexName+' ON'+@Db_name+'.'+@SchemaName+'.'+ @TableName +' REBUILD WITH (ONLINE = ON )'--联机重建索引。即不锁定表重新创建索引 EXEC SP_EXECUTESQL @Defrag end fetch next from frg_cur into @Db_name,@TableName,@IndexName,@SchemaName,@PctFrag end close frg_cur deallocate frg_cur end set nocount off |