RAISERROR('Error executing index reorganization/rebuild script: Only databases with SQL Server 2005 or later compatibility level are supported', 20, 1)WITHLOG; END IF @verboseMode=1 PRINT'Initial checks completed with no errors.'; -- Temporary table for storing index fragmentation details IF OBJE...
另外要注意的是,不要在收缩数据库(dbcc shrinkfile, dbcc shrinkdatabase)前整理索引碎片。 Using sys.dm_db_index_physical_stats in a script to rebuild or reorganize indexes The following example automatically reorganizes or rebuilds all partitions in a database that have an average fragmentation over ...
6. Set up a maintenance plan to reorganize/rebuild indexes that are prone to fragmentation To find any database fragmentation you can run the various Disk Usage reports in the database right click in SSMS. Alternatively, you can use various SQL Server management views and functions. For example...
8075 Reduces VAS fragmentation when you receive memory page allocation errors on a 64-bit SQL Server 2012 (11.x) or SQL Server 2014 (12.x). For more information, see KB3074434.Applies to: SQL Server 2012 (11.x), SQL Server 2014 (12.x) RTM CU 10, and SQL Server 2014 (12.x) Se...
sql server 碎片整理时间长,SQLServer中一个页面包含8KB数据,连续的8个页面组成一个区(extent)。数据的insert和update可以引起页面分割产生碎片。如果分割后的两个页面在同一个区内,这种碎片称为内部碎片,如果分割后的两个页面处于不同的区内,这种碎片称为外部碎片。
avg_fragmentation_in_percentfloat索引的邏輯片段,或配置單位中堆積的範圍IN_ROW_DATA片段。 此值會以百分比來測量,並考慮多個檔案。 如需邏輯和範圍片段的定義,請參閱。 0針對LOB_DATA和ROW_OVERFLOW_DATA配置單位。NULL當模式,適用於堆積。 fragment_countbigint配置單位分IN_ROW_...
WHILE @@FETCH_STATUS = 0BEGINPRINT'Executing DBCC INDEXDEFRAG (0, '+RTRIM(@tablename) +', '+RTRIM(@indexid) +') - fragmentation currently '+RTRIM(CONVERT(varchar(15),@frag)) +'%';SELECT@execstr ='DBCC INDEXDEFRAG (0, '+RTRIM(@objectid) +', '+RTRIM(@indexid) +')'; EXEC (@...
indexes. The results, which are sorted by the percent of fragmentation, show the most logically fragmented indexes across all databases, along with the database/table concerned. Note that this can take a while to run initially (several minutes), so I've commented it out in the script ...
Fragmentation may also be implicated in performance issues, in that the database engine may need to access more pages than it might otherwise. Moreover, incorrect statistics can lead the query optimizer to choose a less efficient plan.
GetFragOptionString 获取作为字符串值的 FragmentationOption 对象。 (从 SqlSmoObject 继承。) GetGuidParameter 对SqlSmoObject 的Guid 属性赋值。 (从 SqlSmoObject 继承。) GetHashCode (从 Object 继承。) GetIsSystemNamed Gets a Boolean value that specifies whether the system is named. (从 ScriptNameOb...