title: Error 'OracleInternal.Common.ODTSettings.m_bUseLongIdentifiers' While adding migration
body: <p>When I add a code-first EF migration, I get the following error:</p>
  
  <p><strong>Field not found: 'OracleInternal.Common.ODTSettings.m_bUseLongIdentifiers'.</strong></p>
  
  <p>and the migration is not created.</p>
  
  <p>I'm targeting Oracle 12c and verified my connection strings and all the configuration.
  The same configuration works perfectly in another project.</p>