C# OracleDependency指定端口赢得'；行不通

首先，我将.NET4.5与C#一起使用

我有一个奇怪的问题，真的找不到任何方法来进一步调试它。 当我为OracleDependency指定一个端口时，它仍然使用一个随机端口，因为它提供了一个ORA-24911，无法在指定端口启动侦听器线程

如果我没有为OracleDependency指定端口，那么一切都正常。问题在于，该代码在上周五之前一直使用生产中指定的端口，当时该应用程序已更新到最新版本（尽管注册OracleDependency的代码从2018年起没有更改）

这是我用来理解发生了什么的代码

using (OracleCommand command = new OracleCommand(sql, connection))
{
    File.AppendAllText("result.txt", "Set AddRowId to true" + Environment.NewLine);
    command.AddRowid = true;


    if (notificationPort != null)
    {
        File.AppendAllText("result.txt", "Set OracleDependency port to " + notificationPort.ToString());
        OracleDependency.Port = notificationPort.Value;
    }
    else
    {
        File.AppendAllText("result.txt", "No OracleDependency port specified. Let Oracle choose port");
    }

    File.AppendAllText("result.txt", "Creating OracleDependency object" + Environment.NewLine);
    dependency = new OracleDependency(command);
    File.AppendAllText("result.txt", "Created OracleDependency object" + Environment.NewLine);

    File.AppendAllText("result.txt", "Setting command.Notification.IsNotifiedOnce to false" + Environment.NewLine);
    command.Notification.IsNotifiedOnce = false;
    File.AppendAllText("result.txt", "Setted command.Notification.IsNotifiedOnce" + Environment.NewLine);

    File.AppendAllText("result.txt", "Setting command.Notification.Timeout to 0" + Environment.NewLine);
    command.Notification.Timeout = 0;
    File.AppendAllText("result.txt", "Setted command.Notification.Timeout to 0" + Environment.NewLine);

    //File.AppendAllText("result.txt", "Setting OnChange event of dependency object" + Environment.NewLine);
    //dependency.OnChange += new OnChangeEventHandler(Callback);
    //File.AppendAllText("result.txt", "Setted OnChange event of dependency object" + Environment.NewLine);

    File.AppendAllText("result.txt", "Executing command in order to register the dependency" + Environment.NewLine);
    int queryRegistered = command.ExecuteNonQuery();
    File.AppendAllText("result.txt", "Executed command in order to register the dependency" + Environment.NewLine);

    if (queryRegistered == -1)
    {
        File.AppendAllText("result.txt", "Database notification handler registered successfully." + Environment.NewLine);
        File.AppendAllText("result.txt", Environment.NewLine);
    }
    else
    {
        File.AppendAllText("result.txt", "Error registering database notifications handler: " + queryRegistered);
        File.AppendAllText("result.txt", Environment.NewLine);
    }
}

当然，这没有多大帮助，因为我怀疑的是，当对数据库执行ExecuteOnQuery时，数据库返回了ORA-24911

有人对我如何进行调试以发现可能发生的情况有什么建议吗

提前谢谢