D:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\DATA databaseName.mdf databaseName.ldf 在Microsoft SQL Server文件里有保存我们的database record. 上面2个file代表了一个database. 如果我们想快速的把资料和配置搬到一台电脑上,可以copy这2个file copy 时要先停止 sql 运行 C:\ProgramData\Microsof…

回到目录 Cannot attach the file as database这个异常是在EF的code frist里经常出现的,解决方法很简单,只要重新启动一下V11实例即可. CMD> sqllocaldb.exe stop v11. LocalDB instance "v11.0" stopped. CMD> CMD> sqllocaldb.exe delete v11. LocalDB instance "v11.0" deleted. C…

在用VS自带的 .mdf读取(joint)时,报错: Server Error in '/' Application. An attempt to attach an auto-named database for file F:\cs\office\ReadWriterOffice\ReadWriterOffice\App_Data\Database.mdf failed. A database with the same name exists, or specified file cann…

Cannot attach the file as database这个异常是在EF的code frist里经常出现的,解决方法很简单,只要重新启动一下V11实例即可. CMD> sqllocaldb.exe stop v11.0 LocalDB instance "v11.0" stopped. CMD> CMD> sqllocaldb.exe delete v11.0 LocalDB instance "v11.0" deleted. CMD&…

Background Story: One of my friends recently called up and asked me if I had spare time to look at his database and give him a performance tuning advice. Because I had some free time to help him out, I said yes. I asked him to send me the details of…

Cannot attach the file 'D:\GitHome\cae\CAE\App_Data\membership.mdf' as database 'membership'. 说明: 执行当前 Web 请求期间,出现未经处理的异常.请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息. 异常详细信息: System.Data.SqlClient.SqlException: Cannot attach the file 'D:\GitHome\cae\CAE\App_…

Cannot attach the file 'D:\GitHome\cae\CAE\App_Data\membership.mdf' as database 'membership'. 说明: 执行当前 Web 请求期间,出现未经处理的异常.请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息. 异常详细信息: System.Data.SqlClient.SqlException: Cannot attach the file 'D:\GitHome\cae\CAE\App_…

第一步:创建Config文件夹和log4net.config 第二步:在log4net.confg黏贴以下配置 <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSecti…

http://sqlite.org/whentouse.html Appropriate Uses For SQLite SQLite is not directly comparable to client/server SQL database engines such as MySQL, Oracle, PostgreSQL, or SQL Server since SQLite is trying to solve a different problem. Client/server S…

I/O requests taking longer than 15 seconds to complete on file I/O瓶颈问题 http://mssqlwiki.com/2012/08/27/io-requests-taking-longer-than-15-seconds-to-complete-on-file/ http://www.cnblogs.com/lyhabc/p/3720666.html(从分析SQLSERVER ERRORLOG查找错误折射出的工作效率问题) SQ…