Oracle .Net ManagedDataAccess Error: Could not load type 'OracleInternal.Common.ConfigBaseClass' from assembly

Question

I have a project that works locally, on our dev server, and on our production server.

When I try to run it on the test server, I get the error below, and I don\'t kn

Answer 1

If removing the DLL from the GAC is not an option, consider getting the next version of oracle.managedData.access 12.2.1 and just put them on the server in the bin directory. Afterwards you need to add an assemblyBinding to your web.config file.

This way you get arround pulling the 12.1.2 version from the GAC during runtime that will case the error. You do not need to recompile your app against the new version.

      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-12.1.2.0" newVersion="12.2.1.0" />
      </dependentAssembly>

Answer 2

In my scenario, i have a console application consuming a class library database utility. I had to reference the Oracle.ManagedDataAccess also on the console application so it can find the dll on runtime. I don't know if this is the best approach, but worked for me.

Answer 3

There is definitely something weird with this issue. I was developing an app on my local server which ran fine but got this error when I uploaded the app to our server. The server has oracle client installed. After looking at this thread I copied the two DLLs (Oracle.ManagedDataAccess.dll & Oracle.ManagedDataAccess.EntityFramework.dll) from within oracle client and replaced the versions in my app bin directory. That fixed the issue.