2017-11-01 09:49:44.35 spid166 SQL Server has encountered 1 occurrence(s) of cachestore flush for the 'Object Plans' cachestore (part of plan cache) due to some database maintenance or reconfigure operations. 2017-11-01 09:49:47.85 spid166 SQL Server…

sql server 会记录IO等待时间超过15 seconds的请求,这时application会有 time out 现象,dba需要判断是workload,concurrecy 所致还是sql server配置没有最优导致?二者之间的比例各占多少? 1:判断sql server的配置是否最优化,相对容易,可以有以下项目检查: a: 通过datafile/logfile放置在不同的drive上,可以分离random io 和 sequence io 操作,可以极大的缓解读写IO,对于写IO,…

本文出处:http://www.cnblogs.com/wy123/p/6984885.html 最近遇到一个SQL Server服务器响应极度缓慢,并且出现客户端请求报错的情况,在数据库中的errorlog中出现磁盘请求超过15s才完成的error消息.对于此类问题,到底是存储系统或者磁盘的故障,还是SQL Server 自己的问题,亦或是应用程序引发的呢?又要如何解决?本文将对引起此问题的某一方面的因素进行简单的分析,但是无法涵盖所有潜在的可能性,因此遇到类似问题还要做具体的分析. SQL…

Complete list of Microsoft SQL Server trace flags (585 trace flags) REMEMBER: Be extremely careful with trace flags, test in your test environment first. And consult professionals first if you are the slightest uncertain about the effects of your cha…

朋友遇到一个很棘手的问题,查看服务器日志,报以下错误: ::,spid296,未知,错误: ,严重性: ,状态: . ::,spid495,未知, The client was unable <c/> which had been reset . This error may have been caused by an earlier operation failing. Check the error logs for failed operations immediately befor…

Don’t confuse error 823 and error 832 本文大意:      错误832:           A page that should have been constant has changed (expected checksum: 1dcb28a7, actual checksum: 68c626bb, database 13, file 'E:\Program Files\microsoft sql server\MSSQL\data\BlahBlah.…

很早以前有看到过关于使用RML Utilities工具分析SQL Trace(.trc)的文章,但一直没有具体实践.最近接管一台数据库服务器,跟踪出一批高消耗的语句,老大需要跟踪分析报表,罗列出过程(语句)按CPU.Duration.Reads的执行情况(总消耗.平均消耗.执行次数).很多存储过程调用或动态语句总体是一样的,只是带的参数会有不同.所以重点是针对这一类的跟踪结果进行处理.一开始是使用fn_trace_gettable对跟踪文件进行分析,按TextData排序,通过截取TextDat…

Appendices Published: April 27, 2005 On This Page Appendix A: SQL Server for Oracle Professionals Appendix B: Getting the Best Out of SQL Server 2000 and Windows Appendix C: Baselining Appendix D: Installing Common Drivers and Applications Installing…

http://sqlserverbuilds.blogspot.jp/   What version of SQL Server do I have? This unofficial build chart lists all of the known Service Packs (SP), Cumulative Updates (CU), patches, hotfixes and other builds of MS SQL Server 2016, 2014, 2012, 2008 R2,…

原帖地址 What version of SQL Server do I have? This unofficial build chart lists all of the known Service Packs (SP), Cumulative Updates (CU), patches, hotfixes and other builds of MS SQL Server 2014, 2012, 2008 R2, 2008, 2005, 2000, 7.0, 6.5 and 6.0 tha…