今天用EF遇到一个问题, The specified named connection is either not found in the configuration, not intended to be used....... 原因是我的EF中数据库连接字符串放到App.Config文件中, 而我另一个工程使用此工程时没有添加App.Config 或者Web.Config 解决办法: 在调用工程中添加App.Config, 或者Web.Config , 然后把EF工程中的连接字符串添加到此…

在mysql中使用事件调度器(计划任务), 语句写好了,运行也ok,可是却没有预期的结果.网上总结了非常多计划任务失效的原因.没有一种适合我. 在phpmyadmin中打开事件表,发现以下一串红色的提示:Connection for controluser as defined in your configuration failed. 把这句话粘贴在网上搜了一下,多是一些国外的站点,没看懂,然后翻译了一下这句话的意思就是:"由于在配置中定义的控制用户连接失败". 二话不说,找到php…

在学习EF core first 对接mysql时,出现了这个异常. 原因是:连接字符串中缺少providerName="MySql.Data.MySqlClient" <add name="MysqlEF" connectionString="Data Source=192.168.1.125;port=3307;Database=MiniProfilerDemo;User Id=root;Password=123456;Allow User Va…

1.数据库配置 The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid Web.config 中进行配置 2.DLL引用 说明: 在编译向该请求提供服务所需资源的过程中出现错误.请检查下列特定错误详细信息并适当地修改源代码. 编译器错误消息: CS0012: 类型“Sys…

There is often quite a lot of confusion about how best to set up a database connection with Mongoose. So I thought I'd clear it up! There are two ways of establishing a Mongoose connection, using the default connection or a named connection. In this…

http://stackoverflow.com/questions/4335827/changing-nhibernate-connectionstring http://stackoverflow.com/questions/491139/how-do-you-change-nhibernates-connection-string-per-http-request http://jasondentler.com/blog/2009/11/authentication-impersonati…

com.microsoft.sqlserver.jdbc.SQLServerException: 通过端口 1433 连接到主机 localhost 的 TCP/IP 连接失败.错误:“Connection refused: connect.请验证连接属性,并检查 SQL Server 的实例正在主机上运行,且在此端口接受 TCP/IP 连接,还要确保防火墙没有阻止到此端口的 TCP 连接.”. 在命令行中输入:telnet localhost 1433,连接不上: 检查下配置:服务和连接的外围…

http://docs.oracle.com/cd/E13222_01/wls/docs81/ConsoleHelp/jdbc_connection_pools.html#1106016 JDBC Connection Pools [Attributes and Console Screen Reference for JDBC Connection Pools] The following sections explain how to configure and manage JDBC co…

原文地址:https://dev.mysql.com/doc/refman/5.7/en/explain-output.html 9.8.2 EXPLAIN Output Format The EXPLAIN statement provides information about the execution plan for a SELECT statement. EXPLAIN returns a row of information for each table used in the S…

Chapter6 Controlling Database Location,Creation Process, and Seed Data 第6章 控制数据库位置,创建过程和种子数据 In previous chapters you have seen how convention and configuration can be used to affect the model and the resulting database schema. In this chapter you wi…