Oracle 19 User Interface Authentication using ODP.Net Core

Question

We are developing an . Net Core 3.1 application that connects to an Oracle 19 database. During authentication with an Oracle User Enterprise we are receiving the following error: "ORA-01017: invalid username/password; logon denied". I have created a small program to test this behavior. I am using Oracle.ManagedDataAccess.Core (2.19.90) as Provider.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TestConsoleCore
{
    class Program
    {
        const string dataSource = "(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = schema.example.com)(PORT = 1522))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = service.example.com)))";
        const string userID = "user.test";
        const string password = "password";


        static string connectionString;
        static void Main(string[] args)
        {

            connectionString = string.Format("Data Source={0};User ID={1};Password={2}", dataSource, userID, password);

            var con = new Oracle.ManagedDataAccess.Client.OracleConnection(connectionString);
            {
                con.Open();
            }
        }
    }
}

If authenticating me with a normal database user works perfectly.

We also successfully authenticate with both users with this implementation of system.data.oracleclient for . Net Core. But we have some problems with mapping some DB types.

Someone’s had this problem before?