Реорганизация всех индексов. А если надо перестроение. Во всех базах данных.
Это можно воткнуть например в ежедневный план обслуживания.
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-- http://www.sql-server-performance.com/2012/performance-tuning-re-indexing-update-statistics/ -- Для индексов с фрагментацией > 10% выполняется REORGANIZE -- Для индексов с фрагментацией > 30% выполняется REBUILD SET NOCOUNT ON; DECLARE @objectid int; DECLARE @dbid int; DECLARE @indexid int; DECLARE @partitioncount bigint; DECLARE @schemaname nvarchar(130); DECLARE @objectname nvarchar(130); DECLARE @indexname nvarchar(130); DECLARE @dbname nvarchar(130); DECLARE @partitionnum bigint; DECLARE @partitions bigint; DECLARE @frag float; DECLARE @command nvarchar(4000); -- Conditionally select tables and indexes from the sys.dm_db_index_physical_stats function -- and convert object and index IDs to names. SELECT object_id AS objectid, index_id AS indexid, partition_number AS partitionnum, avg_fragmentation_in_percent AS frag, database_id as dbid INTO #work_to_do FROM sys.dm_db_index_physical_stats (0, NULL, NULL , NULL, 'LIMITED') WHERE avg_fragmentation_in_percent > 10.0 AND index_id > 0; SELECT * FROM #work_to_do; -- Declare the cursor for the list of partitions to be processed. DECLARE cr_partitions CURSOR FOR SELECT * FROM #work_to_do; OPEN cr_partitions; WHILE (1=1) BEGIN FETCH NEXT FROM cr_partitions INTO @objectid, @indexid, @partitionnum, @frag, @dbid; IF @@FETCH_STATUS < 0 BREAK; set @dbname = QUOTENAME(DB_NAME(@dbid)); -- список баз исключений IF @dbname = '[tempdb]' continue; IF @dbname = '[msdb]' continue; IF @dbname = '[u424495_autocall]' continue; set @command = N'USE '+@dbname+N'; SELECT @objectname=QUOTENAME(o.name),@schemaname = QUOTENAME(s.name) FROM sys.objects AS o JOIN sys.schemas as s ON s.schema_id = o.schema_id WHERE o.object_id=@objectid' exec sp_executesql @command, N'@objectid int, @objectname nvarchar(130) OUTPUT, @schemaname nvarchar(130) OUTPUT', @objectid, @objectname output, @schemaname output; set @command = N'USE '+@dbname+N'; SELECT @indexname = QUOTENAME(name) FROM sys.indexes WHERE object_id = @objectid AND index_id = @indexid' exec sp_executesql @command, N'@objectid int, @indexid int, @indexname nvarchar(130) OUTPUT', @objectid, @indexid, @indexname output; set @command = N'USE '+@dbname+N'; SELECT @partitioncount = count (*) FROM sys.partitions WHERE object_id = @objectid AND index_id = @indexid' exec sp_executesql @command, N'@objectid int, @indexid int, @partitioncount int OUTPUT', @objectid, @indexid, @partitioncount output; -- 30 is an arbitrary decision point at which to switch between reorganizing and rebuilding. IF @frag < 30.0 SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @dbname + N'.' + @schemaname + N'.' + @objectname + N' REORGANIZE'; IF @frag >= 30.0 SET @command = N'ALTER INDEX ' + @indexname + N' ON ' + @dbname + N'.' + @schemaname + N'.' + @objectname + N' REBUILD WITH (SORT_IN_TEMPDB = ON, ONLINE = ON)'; IF @partitioncount > 1 SET @command = @command + N' PARTITION=' + CAST(@partitionnum AS nvarchar(10)); print(@command) EXEC (@command); PRINT @objectname+'.'+@indexname+'.'+CAST(@partitionnum AS nvarchar(10)); PRINT N'Executed: ' + @command; END; CLOSE cr_partitions; DEALLOCATE cr_partitions; DROP TABLE #work_to_do; |
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