在 Advisor Runs 下拉菜单中选择 Last 24 Hours。单击 Go。 3. 为在负载处于执行状态的时间段内执行的实例 1 选择 ADDM 任务。可以检查在上个部分的第 3 步和第 7 步中记录的时间值。单击 View Result。 4. 在ADDM 页面上,查看 Performance Analysis 部分中的结果。单击对数据库时间影响程度最高的结果。它...
Time interval (last 24 hours, past week, or past month). Number of queries. Aggregation function. Select theGo >button to see the customized view. Important Query Performance Insight is limited to displaying the top 5-20 consuming queries, depending on your selection. Your database can run ...
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Integrerad acceleration & avlastningSQL Server 2022 (16.x) använder accelerationstekniker från partner som Intel för att tillhandahålla utökade funktioner. Vid lanseringen tillhandahåller Intel® QuickAssist Technology (QAT) komprimering för säkerhetskopiering och maskinvaruavlast...
FORCE_LAST_GOOD_PLAN = { DEFAULT | ON | OFF } DEFAULT SQL Server 的默认值为 OFF。 ON 数据库引擎在新查询计划导致性能回归的 Transact-SQL 查询中自动强制执行上一个已知完好的计划。 数据库引擎通过该强制计划持续监视 Transact-SQL 查询的查询性能。 如果性能提升,数据库引擎会继续使用上一个已知的良好...
-- Uses AdventureWorksSELECTFirstName, LastName,DATEDIFF(day, ROW_NUMBER()OVER(ORDERBYDepartmentName), SYSDATETIME())ASRowNumberFROMdbo.DimEmployee; N. 指定 startdate 的聚合窗口函数 此示例使用聚合开窗函数作为 startdate 的参数 。 SQL -- Uses AdventureWorksSELECTFirstName, LastName, DepartmentName,...
16Last [@freq_recurrence_factor= ]freq_recurrence_factor The number of weeks or months between the scheduled execution of a job.@freq_recurrence_factoris used only if@freq_typeis8,16, or32.@freq_recurrence_factorisint, with a default of0. ...
1.37 Last Database Backup The metrics in this category provide the last data or incremental backup information for all databases. Default Collection Interval — Every 24 hours Table 1-45 Last Database Backup Metrics MetricDescription Database_name (key column) Name of the database. Days Since ...
Read operations performed by a SNAPSHOT transaction retrieve the last version of each row that had been committed at the time the SNAPSHOT transaction started. This provides a transactionally consistent snapshot of the data as it existed at the start of the transaction. READ COMMITTED transaction...
publicinterfaceCleanupState{defaultvoidregisterProcessingCleanupTimer(ValueState<Long>cleanupTimeState,long currentTime,long minRetentionTime,long maxRetentionTime,TimerService timerService)throws Exception{// last registered timerLong curCleanupTime=cleanupTimeState.value();// check if a cleanup timer is reg...