Re: Oracle ODAC 12c Release 3 32-bit supports EF 6.x?

Question

I am also facing same problem with latest ODP.NET. Our existing application with 11G and EF 4.3 DB first worked very well. We need to migrate our application from 11G to 12C. But its showstopper for us to proceed. Please help us.
My environment details
Latest Oracle ODAC 12c Release 3 - 32-bit released on 24-Dec-2014
Visual Studio 2013 Update 3 - 32 Bit on Windows 8.1 64 bit OS
Entity Framework 6.1.31219.0 (EntityFramework.6.1.2)
I have tried with .Net framework 4.5, 4.5.1 and 4.5.2.
The latest EntityFramework.dll (6.1.31219.0) added to project reference, EF 6.x option alone comes also getting greyed out.
If I remove EntityFramework.dll from project reference, getting only option to use EF 5.0
Tried various config file changes, different versions of EF (6+), also tried reverting to ODAC 12c Release 3 Beta. I could not make it working 12c ODP.Net with EF 6+ DB first.
Please suggest us the ideal environment for 12c ODP.Net with EF 6+ DB first.
Thanks

Answer 1

Have you set the entityFramework correctly in the local app.config/web.config? You need to set it both in any libraries using the code and in the deployed application.
And - how is the system.data/DbProviderFactories in the correct machine.config? You either have to have it set in the correct machine.config or the local app.config/web.config files.
Here's my working local config file, using the 12c R3 release version dll's and the managed drivers:
  <configSections>
    <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=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
  </configSections>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="Oracle.ManagedDataAccess.Client" type="Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices, Oracle.ManagedDataAccess.EntityFramework, Version=6.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
  <system.data>
    <DbProviderFactories>
      <!-- Remove in case this is already defined in machine.config -->
      <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=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
    </DbProviderFactories>
  </system.data>
  <connectionStrings>
    <add name="MyOracleModel" connectionString="DATA SOURCE=MySource;PASSWORD=MyPassword;PERSIST SECURITY INFO=True;USER ID=MyUserName" providerName="Oracle.ManagedDataAccess.Client" />
  </connectionStrings>
And for example
  <oracle.manageddataaccess.client>
    <version number="4.121.2.0">
      <dataSources>
        <dataSource alias="MySource" descriptor="(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=MyService)))" />
      </dataSources>
    </version>
  </oracle.manageddataaccess.client>
for explicit server settings or
  <oracle.manageddataaccess.client>
    <version number="4.121.2.0">
      <settings>
        <setting name="TNS_ADMIN" value="C:\app\path\to\tnsnamesdotora\here\network\ADMIN" />
      </settings>
    </version>
  </oracle.manageddataaccess.client>
..to point to a tnsnames.ora file.