摘自:http://www.cnblogs.com/Amaranthus/archive/2012/03/07/2383551.html 研究cpu压力工具 perfom SQL跟踪 性能视图 cpu相关的wait event Signal wait time SOS_SCHEDULER_YIELD等待 CXPACKET等待 CMEMTHREAD等待 调度队列 cpu密集型查询 高CPU使用率的创建几种状况 miss index 统计数据丢失 非SARG谓词 隐式类型转化 参数探测器 ad ho
SQL Server Blog Official News from Microsoft's Information Platform https://blogs.technet.microsoft.com/dataplatforminsider/2016/12/16/sql-server-on-linux-how-introduction/ This post was authored by Scott Konersmann, Partner Engineering Manager, SQL
原文:http://blogs.msdn.com/b/psssql/archive/2009/11/03/the-sql-server-wait-type-repository.aspx As part of my talk at the 2009 US PASS Summit here in Seattle called Inside SQL Server Wait Types, I’m creating this blog post as a reference point that can
Klaus Aschenbrenner Klaus Aschenbrenner provides independent SQL Server Consulting Services across Europe and the US. Klaus works with the .NET Framework and especially with the SQL Server 2005/2008 from the very beginnings. In the years 2004 - 2005
数据库对象 数据库维持了一系列表存储所有对象.数据类型/约束/配置项/资源等,在2008种我们叫他们为system base tables,并且这些表我们默认是看不到的.我们可以通过管理员登陆数据库,然后执行脚本: USE master; SELECT name FROM sys.objects WHERE type_desc = 'SYSTEM_TABLE'; 能查看到几十条数据.一般我们是不能查看到这些表里边的任何数据,只有通过DAC方式连接数据库才能查看到数据.这些数据主要被数据库引擎使用