webservice连接不上oracle1g,内有配置文件，三天了！！！1

用PL/SQL能正常连接，就是用WEBSERVICE（.net）不能访问，提示“TNS:监听进程不能解析在连接描述符中给出的SERVICE_NAME”
另外，用SQLPLUS也连接不上提示同样的错误

tnsnames.ora文件：
qqq =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = hp)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = qqq)
    )
  )

listener.ora文件
# listener.ora Network Configuration File: D:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = qqq)
      (ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
      (SID_NAME = qqq)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = hp)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
  )

sqlnet.ora文件
# sqlnet.ora Network Configuration File: D:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.

# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.

SQLNET.AUTHENTICATION_SERVICES= (NTS)

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
--------------------编程问答-------------------- 你的连接字符串是什么，贴出来看看。

按以下步骤检查一下：
①服务端的Oracle WindowsService 是否启动了；
②服务端的Listener WindowsService 是否启动了；
（因为你的PL/SQL Developer能连上，所以基本排除服务端有问题。）
③在客户端用SQL*Plus测试连接是否成功；
④检查客户端连接字符串是否正确。
⑤检查客户端是否有安装有多个版本的Oracle？确认ORACLE_HOME路径是否正确。
--------------------编程问答-------------------- 顶起 --------------------编程问答-------------------- 记得以前用连接字符串的时候,可以用
datasource=192.168.0.123..............
可这次只能用
datasource=qqq..............
不知道为什么？

oracle服务器和WEBSERVICE应用在一个机器上

补充：.NET技术 ,  Web Services