今天在微软开发人员官网上学习asp.net mvc5入门的时候,遇到一个棘手的问题,我是按照教程一步一步操作的,但期间遇到一个自己觉得莫名其妙的问题,教程中也没有提到这个, 在添加新字段这一章节,跟着教程操作到“update-database”后,程序包管理控制台报了一个错误,“Cannot attach the file “MvcMovie.mdf” as database “aspnet-MvcMovie”,搞了大半天没明白为什么报这个错误,后来把web.config文件的链接字符串中的“I…

EF使用CodeFirst,当使用localDB时,删除mdf文件,会报“Cannot attach the file ‘{0}' as database '{1}'”错误. 解决方法如下: 1.打开Visual Studio 命令提示 2.sqllocaldb.exe stop v11.0 3.sqllocaldb.exe delete v11.0 然后重新生成数据库文件即可…

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_…

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…

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&…

在进行Migrations时,如果直接删除了Db文件,在使用update-database时会出现Cannot attach the file发问题 解决方案:…

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…

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…

从SQL Server 2005 之后示例数据都为AdventureWorks,需要的通过codeplex网站下载.这样设计的目的应该在于是生产库行不必要的用户以及权限分配. 从以下网址访问http://msftdbprodsamples.codeplex.com/ 除了版本上的区分外,还有OLTP与DW的区分,选择相对应的版本进行下载.一般来说向后兼容,所以就以AdventureWorks2012 作为范例. 数据的下载有多种方式例如直接下载mdf文件,或者使用脚本进行安装或使用备份进行还原的…

在进行code first的迁移时,update-database后默认在App_data文件夹下会新建数据库,如果删除了在使用update-database命令会出现以下错误: Cannot attach the file 'E:\WebApiStudy\App_Data\BooksAPIContext-20150419115728.mdf' as database 'BooksAPIContext-20150419115728'. 原因:虽然.mdf文件被删除了,但是在localdb中的引用…

假设你创建一个数据库时,指定其初始化大小(SIZE )非常大.例如,如下测试案例所示 USE [master] GO   CREATE DATABASE [TEST] ON  PRIMARY  ( NAME = N'TEST_Data', FILENAME = N'D:\SQL_DATA\TEST_Data.mdf' , SIZE = 11527027KB , MAXSIZE = UNLIMITED, FILEGROWTH = 102400KB ) LOG ON  ( NAME = N'TEST…

本文转自:http://www.ironspeed.com/articles/Maintain%20File%20Upload%20Control/Article.aspx Introduction For security reasons, the File Upload control does not save the posted file name in its View State, so the file is lost on postback.  This is not a bu…

 One: he backup set holds a backup of a database other than the existing 'xxdb' database Sometime when you try to restore the backup file on an existing database and receive the following error message: Restore failed for Server 'SQL Server name'.…

0. 查看数据库文件名和物理文件名 SELECT name, physical_name AS current_file_location FROM sys.master_files 1. 运行命令 USE master; -- Run from master ALTER DATABASE db MODIFY FILE (name='db', filename='C:\NewPath\Database.mdf'); ALTER DATABASE db MODIFY FILE (name='db_…

报错信息: 日志信息:/data/ebsdb/VIS/12.1.0/appsutil/log/VIS_ebstest/12222150.log Phase 3 Rename Database Executing command: sh -c "ORACLE_SID=ORCLVIS;export ORACLE_SID;ORACLE_HOME=/data/ebsdb/VIS/12.1.0;export ORACLE_HOME; /data/ebsdb/VIS/12.1.0/bin/rman targ…

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…

Applies to: Oracle Server - Enterprise Edition - Version 11.1.0.6 to 11.2.0.4 [Release 11.1 to 11.2]Information in this document applies to any platform.GoalStep by step guide on how to create a physical standby database using RMAN DUPLICATE FROM ACT…

http://blog.danskingdom.com/using-msbuild-to-publish-a-vs-2012-ssdt-sqlproj-database-project-the-same-way-as-a-vs-2010-dbproj-database-project/ Post and code updated on March 21, 2013, and again on March 22, 2013. We recently upgraded from VS (Visual…

作者:david_zhang@sh [转载时请以超链接形式标明文章] http://www.cnblogs.com/david-zhang-index/p/5042640.html参照文档:https://azure.microsoft.com/en-us/documentation/articles/virtual-machines-configuring-oracle-data-guard/?cdn=disable#implement-the-physical-standby-databas…

TL;DR: Don't ever set fsync=off, don't kill -9 the postmaster then deletepostmaster.pid, don't run PostgreSQL on network file systems. Reports of database corruption on the PostgreSQL mailing list are uncommon, but hardly rare. While a few data corru…

OS: [root@yoon ~]# more /etc/oracle-releaseOracle Linux Server release 5.7 DB: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit ProductionPL/SQL Release 11.2.0.3.0 - Production 测试: 1.对数据库的控制文件备份 2.删除现有的控制文件后,用备份的控制文件还原,出现old control…

Skip Headers Oracle® Database Patch 19121551 - Database Patch Set Update 11.2.0.4.4 (Includes CPUOct2014)   Released: October 14, 2014 This document is accurate at the time of release. For any changes and additional information regarding PSU 11.2.0.4…

In this Document   _afrLoop=100180147230187&id=841183.1&displayIndex=2&_afrWindowMode=0&_adf.ctrl-state=lpsfyr2zf_81#PURPOSE">Purpose   Scope   Details APPLIES TO: Oracle Database - Enterprise Edition - Version 11.1.0.6 and later W…

References: https://community.flexerasoftware.com/showthread.php?182791-Replace-a-single-file-embedded-in-an-MSI Windows Installer Scripting Examples WiFilVer.vbs : Manage File Sizes and Versions WiMakCab.vbs: Generate File Cabinet @ECHO administrati…

使用 management studio right click database -> Tasks -> Generate Scripts -> next until "Set Scripting Options" -> Advance Types of data to script 选择 Schema and data Script Full-Text Indexes  选择 True Script Triggers 选择 True next -> f…

To restore the database on a new host:1. Ensure that the backups of the target database are accessible on the new host.2. Configure the ORACLE_SID on hostb.3. Start RMAN on hostb and connect to the target database without connecting to the recovery c…

1, look at the sphinx.person.address.conf to see how to configure the conf file2, index the database using conf file. the format is as below:    indexer --config sphinx.person.address.conf --all3, search something for fun. format as below:    search…

リンク:How to Move/Restore DB to New Host and File System using RMAN (Doc ID 1338193.1)https://docs.oracle.com/cd/E16338_01/server.112/b56310/upgrade.htm#CACGGHJC ************************************************************Migration Resource************…

文件映射的三个功能: 1.File mapping allows the process to use both random input and output (I/O) and sequential I/O. 2.It also allows the process to work efficiently with a large data file, such as a database, without having to map the whole file into memory.…