OracleConnection.Open抛出了ORA-12541 TNS没有监听器 [英] OracleConnection.Open is throwing ORA-12541 TNS no listener

问题描述

所以我通过C＃连接到外部服务器。我刚在我的计算机上安装了 Oracle 11g 客户端： http ：//www.oracle.com/technetwork/database/windows/downloads/index-090165.html （255MB一个）。

So I am connecting to an external server through C#. I just installed Oracle 11g client on my machine from here: http://www.oracle.com/technetwork/database/windows/downloads/index-090165.html (255MB one).

阅读了许多博客后/ question我发现这篇文章是有用的：

After reading many blogs/questions I found this article to be useful:

http://dbaspot.com/oracle-faq/444787-ora-12541-tns-no-listener.html

这是正确的吗？我什么都做不了。 DBA必须编辑 LISTENER.ORA 文件？

So is this correct? I cannot do anything. The DBA has to edit the LISTENER.ORA file?

我的 tnsnames.ora p>

My tnsnames.ora looks like this:

  TestingConnect=
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = TestHostName.us.local)(PORT = 1523))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = TEST)
    )
  )

这是我的错误：

Oracle.DataAccess.Client.OracleConnection connection = new Oracle.DataAccess.Client.OracleConnection();

connection.ConnectionString = "Data Source=TestHostName.us.local;Persist Security Info=True;" + "User ID=tesName;Password=test";

connection.Open() //Throwing ERR!!!

我该怎么办？我喜欢任何意见。谢谢！

What should I do? I appreciate any comments. Thanks!

推荐答案

感谢您的所有意见。我改变了我的连接字符串，它工作。这里它的样子：

Thanks for all your input. I changed my connection string and it worked. Here its what looks like:

 private static string GetConnectionString()
    {
        return "Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=TestHostName.us.local)(PORT=1523) ) )" +
               "(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=CCDB)));User id=UserName; Password=Password; enlist=false; pooling=false;";
    }

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