title: ORA-01017 .NET Oracle.ManagedDataAccess using proxy user authentication
body: <p>This issue is regarding .NET Oracle.ManagedDataAccess with Oracle 19c proxy user authentication, similar as <a href="https://stackoverflow.com/q/69045367/4484739">this</a> question.</p>
  <p>Using Toad or SQL Developer, the connection works fine using the proxy syntax as username <code>proxy[schema]</code>, so this doesn't seem to be a password problem. Even so, through the .NET application i get the error:</p>
  <p><strong>ORA-01017: invalid username/password; login denied</strong></p>
  <p>See below a simple code that reproduces the problem, trying to open the database connection:</p>
  <pre><code>static void Main(string[] args)
  {
      using (var conn = new OracleConnection(&quot;USER ID=my-schema;DATA SOURCE=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=my-host-name)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=my-service-name)));PROXY PASSWORD=********;PERSIST SECURITY INFO=True;PROXY USER ID=my-proxy-user;&quot;))
      {
          conn.Open();
      }
  }
  </code></pre>
  <p>The connection string was built based on <a href="https://docs.oracle.com/en/database/oracle/oracle-database/19/odpnt/featConnecting.html#GUID-EC0754B1-367C-409D-A495-AE5BA9634B65" rel="nofollow noreferrer">this</a> documentation.</p>
  <p><strong>Attempts:</strong></p>
  <ul>
  <li><p>I get the same error ORA-01017 when trying to use the standard
  connection string parameters (without specific proxy ones) with
  <code>proxy[schema]</code> sintax.</p>
  </li>
  <li><p>The connection opens with <strong>success</strong> when using ODP.NET (not Oracle.ManagedDataAccess) plus
  <code>proxy[schema]</code> sintax, without specific proxy parameters.</p>
  </li>
  <li><p>Tested on another Oracle 19c Database server, the provided source code that reproduces the issue worked with <strong>success</strong>.</p>
  </li>
  </ul>