asp.net-mvc – 无法加载实体框架提供程序类型“Oracle.ManagedDataAccess.EntityFramework”

2019年8月5日 442次阅读

我正在尝试使用Oracle数据提供程序.NET(ODP.NET)在MVC应用程序中使用Entity Framework v6连接到Oracle.

我从这里安装了ODP.NET：
https://www.nuget.org/packages/odp.net.entityframework/6.121.1-beta

我已经配置了我的web.config文件,如下所示：

<connectionStrings>
    <add name="MyDB" connectionString="User ID=MyUser;Password=MyPassword;Data Source=MyDatabase; Persist Security Info=False" providerName="Oracle.ManagedDataAccess" />
</connectionStrings>



<entityFramework>
    <providers>
        <provider invariantName="Oracle.ManagedDataAccess.Client" type="Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices, Oracle.ManagedDataAccess.EntityFramework, Version=6.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
    </providers>
 </entityFramework>

但是,当我尝试调用我的EF上下文时,我收到以下错误：

The Entity Framework provider type ‘Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices, Oracle.ManagedDataAccess.EntityFramework, Version=6.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342’ registered in the application config file for the ADO.NET provider with invariant name ‘Oracle.ManagedDataAccess.EntityFramework’ could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application

我花了很多时间寻求帮助.非常感谢任何帮助！

谢谢！

马丁

最佳答案 将此部分添加到web.config以及上面的步骤似乎已修复此问题：

<system.data>

    <DbProviderFactories>

      <add name="ODP.NET, Managed Driver"
           invariant="Oracle.ManagedDataAccess.Client"
           description="Oracle Data Provider for .NET, Managed Driver"
           type="Oracle.ManagedDataAccess.Client.OracleClientFactory, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
    </DbProviderFactories>

</system.data>
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