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

As others said you need to remove Oracle.ManagedDataAccess from GAC.

I run {Oracle home}\product\12.1.0\dbhome_1\ODP.NET\managed\x64\unconfigure.bat and {Oracle home}\product\12.1.0\dbhome_1\ODP.NET\managed\x836\unconfigure.bat and it worked