Question

过去24小时，我一直在分析我的网络应用程序与sql server的连接。在1.226.709批次完成后，我有36个，持续时间超过0.1秒。

在36我有4个未知的陈述中。在这里，我希望你们中的一些人可以帮助我讲述这些内容以及它们来自哪里？！：）

第一个问题涉及到我，因为它的持续时间超过1秒。

（跟踪被保存到数据库中的一个表中，这就是所有持续时间都以微秒为单位的原因）

TextData:       SELECT 'Server[@Name=' + quotename(CAST(          serverproperty(N'Servername')         AS sysname),'''') + ']' + '/Collation[@Name=' + quotename(cl.name,'''') + ']' AS [Urn], cl.name AS [Name], CAST(COLLATIONPROPERTY(name, 'CodePage') AS int) AS [CodePage], CAST(COLLATIONPROPERTY(name, 'LCID') AS int) AS [LocaleID], CAST(COLLATIONPROPERTY(name, 'ComparisonStyle') AS int) AS [ComparisonStyle], cl.description AS [Description], CAST(COLLATIONPROPERTY(name, 'Version') AS int) AS [CollationVersion] FROM sys.fn_helpcollations() cl ORDER BY [Name] ASC
CPU:            93
Reads:          0
Writes:         0
Duration:       1013301
ApplicationName Microsoft SQL Server Management Studio - Transact-SQL IntelliSense

TextData:       select  IndA.name, IndA.index_id, IndA.fill_factor, IndA.is_padded, IndA.is_disabled,IndA.is_hypothetical, IndA.allow_row_locks, IndA.allow_page_locks,IndA.spatial_index_type, IndB.bounding_box_xmin, IndB.bounding_box_ymin, IndB.bounding_box_xmax, IndB.bounding_box_ymax, IndB.level_1_grid, IndB.level_2_grid, IndB.level_3_grid, IndB.level_4_grid, IndB.cells_per_object, ind_col.index_column_id, col.name as column_nName, ind_col.key_ordinal, ind_col.is_descending_key, ind_col.column_id, st.no_recompute from (sys.spatial_indexes IndA left outer join sys.spatial_index_tessellations IndB on IndB.object_id = IndA.object_id and IndB.index_id = IndA.index_id) inner join(sys.internal_tables IntT inner join sys.stats st on st.object_id = IntT.object_id and st.stats_id = 1) on IntT.parent_id = IndA.object_id and  IntT.parent_minor_id  = IndA.index_id inner join sys.index_columns ind_col on ind_col.object_id = IndA.object_id and ind_col.index_id = IndA.index_id inner join sys.columns col on col.object_id = ind_col.object_id and col.column_id = ind_col.column_id where IndA.object_id = object_id(N'dbo.rapports') order by IndA.index_id, ind_col.key_ordinal
CPU:            109
Reads:          216
Writes:         0
Duration:       148322
ApplicationName Microsoft SQL Server Management Studio

TextData:       select col.name, col.column_id, st.name as DT_name, schema_name(st.schema_id) as DT_schema, col.max_length, col.precision, col.scale, bt.name as BT_name, col.collation_name, col.is_nullable, col.is_ansi_padded, col.is_rowguidcol, col.is_identity, case when(idc.column_id is null) then null else CONVERT(nvarchar(40), idc.seed_value) end, case when(idc.column_id is null) then null else CONVERT(nvarchar(40), idc.increment_value) end, CONVERT(bit, case when(cmc.column_id is null) then 0 else 1 end) as is_computed, convert(bit, ColumnProperty(col.object_id, col.name, N'IsIdNotForRepl')) as IsIdNotForRepl, col.is_replicated, col.is_non_sql_subscribed, col.is_merge_published, col.is_dts_replicated, col.rule_object_id, robj.name as Rul_name, schema_name(robj.schema_id) as Rul_schema, col.default_object_id, OBJECTPROPERTY(col.default_object_id, N'IsDefaultCnst') as is_defcnst, dobj.name as def_name, schema_name(dobj.schema_id) as def_schema, CONVERT(bit, case when (ftc.column_id is null) then 0 else 1 end) as is_FullTextCol, col_name(col.object_id, ftc.type_column_id) FT_type_column, ftc.language_id as FT_language_id, case when(cmc.column_id is null) then null else cmc.definition end as formular, case when(cmc.column_id is null) then null else cmc.is_persisted end as is_persisted, defCst.definition, COLUMNPROPERTY(col.object_id, col.name, 'IsDeterministic') as IsDeterministic, xmlcoll.name as xmlSchema_name, schema_name(xmlcoll.schema_id) as xmlSchema_schema, col.is_xml_document, col.is_sparse, col.is_column_set from sys.columns col left outer join sys.types st on st.user_type_id = col.user_type_id left outer join sys.types bt on bt.user_type_id = col.system_type_id left outer join sys.objects robj on robj.object_id = col.rule_object_id and robj.type = 'R' left outer join sys.objects dobj on dobj.object_id = col.default_object_id and dobj.type = 'D' left outer join sys.default_constraints defCst on defCst.parent_object_id = col.object_id and defCst.parent_column_id = col.column_id left outer join sys.identity_columns idc on idc.object_id = col.object_id and idc.column_id = col.column_id left outer join sys.computed_columns cmc on cmc.object_id = col.object_id and cmc.column_id = col.column_id left outer join sys.fulltext_index_columns ftc on ftc.object_id = col.object_id and ftc.column_id = col.column_id left outer join sys.xml_schema_collections xmlcoll on xmlcoll.xml_Collection_id = col.xml_Collection_id where col.object_id = object_id(N'dbo.rapports') order by col.column_id
CPU:            215
Reads:          6895
Writes:         0
Duration:       142054
ApplicationName Microsoft SQL Server Management Studio

TextData:       SELECT dtb.name AS [Name], dtb.database_id AS [ID], CAST(case when dtb.name in ('master','model','msdb','tempdb') then 1 else dtb.is_distributor end AS bit) AS [IsSystemObject], CAST(has_dbaccess(dtb.name) AS bit) AS [IsAccessible], dtb.collation_name AS [Collation], dtb.name AS [DatabaseName2] FROM master.sys.databases AS dtb ORDER BY [Name] ASC
CPU:            15
Reads:          324
Writes:         0
Duration:       111258
ApplicationName Microsoft SQL Server Management Studio - Transact-SQL IntelliSense

额外信息！

我每晚都运行一个脚本来备份数据库。我不知道4个陈述是否与此无关。备份声明如下：

TextData:   declare @DBName varchar(200)  declare @Filename varchar(1000)  declare @Description varchar(1000)    DECLARE AllDatabases CURSOR FOR  SELECT name AS Name  FROM MASTER.DBO.SYSDATABASES  WHERE [NAME] NOT IN('MODEL', 'tempdb')    OPEN AllDatabases    FETCH NEXT FROM AllDatabases INTO @DBName    WHILE @@FETCH_STATUS = 0  BEGIN    print ''  print ''  print 'Backing up database ' + @DBName    -- Backup the database  set @Filename = 'D:\backup\' + convert(varchar, getDate(), 112) + ' - ' + @DBName + '.bak'  set @Description = 'Full backup of database ' + @Filename  BACKUP DATABASE @DBName TO DISK = @Filename WITH INIT , NOUNLOAD , NAME = @Description, NOSKIP , STATS = 10, NOFORMAT      FETCH NEXT FROM AllDatabases INTO @DBName  END    CLOSE AllDatabases  DEALLOCATE AllDatabases
CPU:        219
Reads:      2569
Writes:     83
Duration:   4478260

噢，是的......我不习惯我的SQL Server。你有什么提示吗？ :)我当然一直在谷歌搜索主题。

Answer 1

添加ApplicationName列后，您可以看到SSMS正在运行查询以收集有关数据库的元数据。 SSMS需要各种元数据来显示数据库，对象，登录等（你也可以看到对Intellisense的引用），所以看它查询服务器是完全正常的。除非你有某种性能问题可以直接从SSMS链接到这些查询，否则我会忘记它们。

Answer 2

同样的查询还负责在对象资源管理器中从一个服务器转换到另一个服务器时挂起SMSS。只需终止运行此查询的进程并继续播放。

SQL事件探查器在未知TextData上显示高持续时间

2 个答案: