16 SQL Server 2012 slower than 2008 1 How to optimize SQL with WHERE and ORDER BY 6 Optimizing slow performance of simple SELECT query 10 Slow JOIN on tables with millions of rows 7 After Restoring Log Shi
针对这四大主题,应该对 Performance Counter 多加留意, 也就是这张表sys.dm_os_performance_counters里面的性能指标要熟悉; 硬件层面如果没有问题,等待时间比较合理,那么出问题的就该是软件了,这里涉及到的软件,主要也就是 SQL Execution Plan。 执行计划是如何产生的,如何被优化的,有哪些执行树,执行符号等等。另外...
简单的SQL Server性能调优 目的是查看系统(应用程序+数据库)调用SQL Stored Procedure存储过程和SQL语句的性能,查出哪儿慢?哪个存储过程最耗用时间? 1. 打开Profiler: "Start - Programs - SQL Server2005 - Performance Tools - Sql Server Profiler" 2. 点击工具栏第一个button - "New Trace..." 3. 在第一...
1: create procedure Performance_Solution_Table_Paramters @Temptable Specialtable Readonly 2:as 3: begin 4: select * from @Temptable 5: end 6: Finally, execute the stored procedure : 7: declare @temptable_value specialtable 8: insert into @temptable_value select'1','Jone' union select'2',...
Performance:Auto Stats Progress Report:Online Index Operation Security Audit:、Audit Logi、Audit Login Failed、Audit Logout、Audit Server Starts and Stops、Audit Backup/Restore Event、Audit DBCC Event Server:所有事件 Sessions:ExistingConnection Stored Procedures:RPC:Completed, RPC:Starting ...
In this article I will describe a step-by-step procedure for basicSQL Serverperformance tuning.. #1 Finding The Culprits As with any other software, we need to understand that Microsoft SQL Server (SQL Server or MSSQL for short) is a complex computer program. If we have a problem with ...
You can use theSQL Server Management Studio (SSMS)user interface or Transact-SQL in an SSMS query window to execute a stored procedure. Always use the latest version of SSMS. Use SQL Server Management Studio InObject Explorer, connect to an instance of SQL Server or Azure SQL Database, expa...
SQL Server优化的方法<一> 查询速度慢的原因很多,常见如下几种: 1、没有索引或者没有用到索引(这是查询慢最常见的问题,是程序设计的缺陷) 2、I/O吞吐量小,形成了瓶颈效应。 3、没有创建计算列导致查询不优化。 4、内存不足 ...
You can use theSQL Server Management Studio (SSMS)user interface or Transact-SQL in an SSMS query window to execute a stored procedure. Always use the latest version of SSMS. Use SQL Server Management Studio InObject Explorer, connect to an instance of SQL Server or Azure SQL Database, expa...
It also provides information to the server that may be used to optimize query plans. Schema design is largely a tradeoff between good read performance and good write performance. Normalization helps write performance. Denormalization helps read performance. Using an inefficient disk subsystem. The ...