Oracle 18c 和 .Net 4.7.2：“无法加载 Oracle.ManagedDataAccess.Client”答案

【问题标题】：Oracle 18c & .Net 4.7.2: "Oracle.ManagedDataAccess.Client could not be loaded"Oracle 18c 和 .Net 4.7.2：“无法加载 Oracle.ManagedDataAccess.Client”
【发布时间】：2018-12-27 20:25:10
【问题描述】：

在我的 .NET 4.7.2 类库项目中，我添加了“Oracle.ManagedDataAccess.EntityFramework”nuget 包。访问 DbContext 时

using (var ctx = new BdeDbContext())

我在 ADO 的应用程序配置文件中注册了“实体框架提供程序类型 'Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices, Oracle.ManagedDataAccess.EntityFramework, Version=6.122.18.3, Culture=neutral, PublicKeyToken=89b483f429c47342'无法加载具有固定名称“Oracle.ManagedDataAccess.Client”的 .NET 提供程序。请确保使用了程序集限定名称并且程序集可用于正在运行的应用程序。"

在查看了类似的帖子后，我还添加了“ODAC for Visual Studio 2017”和“odp.net.x64”，但这并没有帮助。有没有人遇到过类似的问题？

我的 app.config 如下所示。

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <configSections>
        <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
        <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
        <section name="oracle.manageddataaccess.client" type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=4.122.18.3, Culture=neutral, PublicKeyToken=89b483f429c47342" />
    </configSections>
    <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
    </startup>
    <entityFramework>
        <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
            <parameters>
                <parameter value="v13.0" />
            </parameters>
        </defaultConnectionFactory>
        <providers>
            <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
            <provider invariantName="Oracle.ManagedDataAccess.Client" type="Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices, Oracle.ManagedDataAccess.EntityFramework, Version=6.122.18.3, Culture=neutral, PublicKeyToken=89b483f429c47342" />
        </providers>
    </entityFramework>
    <system.data>
        <DbProviderFactories>
            <remove invariant="Oracle.ManagedDataAccess.Client" />
            <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=4.122.18.3, Culture=neutral, PublicKeyToken=89b483f429c47342" />
        </DbProviderFactories>
    </system.data>
    <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <publisherPolicy apply="no" />
                <assemblyIdentity name="Oracle.ManagedDataAccess" publicKeyToken="89b483f429c47342" culture="neutral" />
                <bindingRedirect oldVersion="4.122.0.0 - 4.65535.65535.65535" newVersion="4.122.18.3" />
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="CommonServiceLocator" publicKeyToken="489b6accfaf20ef0" culture="neutral" />
                <bindingRedirect oldVersion="0.0.0.0-2.0.4.0" newVersion="2.0.4.0" />
            </dependentAssembly>
        </assemblyBinding>
    </runtime>
    <oracle.manageddataaccess.client>
        <version number="*">
            <dataSources>
                <dataSource alias="SampleDataSource" descriptor="(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL.MYCOMPANY.COM))) " />
            </dataSources>
        </version>
    </oracle.manageddataaccess.client>
    <connectionStrings>
        <add name="BdeDb" providerName="Oracle.ManagedDataAccess.Client" connectionString="User Id=sys;Password=0r@cl3;Data Source=orcl.mycompany.com" />
    </connectionStrings>
</configuration>