C＃Oracle.ManagedDataAccess超时挂起

Question

我有一个应用程序，需要针对Oracle DB执行用户创建的脚本（technical用户）。该应用程序的通用模型是将结果全部作为数据集返回。因此，我进行了以下单元测试，以验证它在调用静态方法时是否处理了超时。达到超时时，它只是无限期地挂起，而不是像对SQL Server DB使用SqlCommand / SqlDataAdapter一样引发异常。我正在使用Oracle.ManagedDataAccess v19.8.0。

[TestMethod]
public void Oracle_Query_Timesout()
{
    string connectionString = OracleDatabaseAccess.GetDecryptedConnectionString(
        _testContext.Properties[ENCRYPTION_KEY].ToString(), 
        _testContext.Properties[DATASOURCE].ToString(),
        _testContext.Properties[USER].ToString(),
        _testContext.Properties[ENCRYPTED_PASSWORD].ToString());

    bool noException = false;

    try
    {
        DataSet sampleData = OracleDatabaseAccess.ExecuteDatabaseResultSet(
            connectionString, "SELECT MAX(level) AS Test1 FROM dual CONNECT BY level <= 20000000", 2);

        noException = true;
    }
    catch (Exception ex)
    {
        Assert.IsTrue(ex is OracleException);
    }

    Assert.IsFalse(noException, "Query succeeded, expected timeout");
}


public static DataSet ExecuteDatabaseResultSet(string connectionString, string sqlStatement, int     commandTimeout = 0)
{
    DataSet resultSet = new DataSet();

    using (OracleConnection connection = new OracleConnection(connectionString))
    {
        connection.Open();
        using (OracleCommand command = new OracleCommand(sqlStatement, connection))
        {
            command.CommandType = CommandType.Text;
            command.CommandTimeout = commandTimeout;

            using (OracleDataAdapter adapter = new OracleDataAdapter(command))
            {
                adapter.Fill(resultSet); // <--- Hangs here when timeout reached
            }
        
            // ALTERNATIVE TEST - FAILS
            // using (OracleDataReader reader = command.ExecuteReader()) // <--- Hangs here when timeout reached
            // {
            //      while (reader.Read())
            //      { 
            //          // do nothing
            //      }
            //}
        }
    }

    return resultSet;
}