oracle11g本地能够访问但局域网没法访问

　　问题描述，如今有两台电脑 A 和 B ：

　　1）电脑 A 上有 Oracle11G服务端； ip地址 192.168.1.198; 端口1521；

　　2）电脑 A 本机链接数据库正常，能够登陆及操做等；

　　3）电脑B配置访问电脑A时报错：ORA-12541:TNS:无监听程序

　　报这种错的话，网上有说法，说是防火墙没关，或者是服务端服务没启好等，按本人的实际状况解说：由于oracle服务端访问配置是须要配置访问地址监听的，具体见Oracle安装路径：% product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora，这个是个人oracle监听服务的配置文件，内容以下：

# listener.ora Network Configuration File: E:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.190)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = E:\app\Administrator

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　　这时候我能够采用两种方法来解决：

　　方法一：直接用下面的语句覆盖掉listener.ora中的内容，以后重启oracle和监听器便可。

# listener.ora Network Configuration File: E:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = SKY-20130705VGC)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = E:\app\Administrator

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　　方法二：用windows下的oracle的监听配置工具，把监听从新配置一次，以后重启oracle和监听器便可。从新配置监听器的方法以下：

 

参考资料：

http://www.dedecms.com/knowledge/data-base/oracle/2012/1214/17634.html

http://blog.csdn.net/wwbmyos/article/details/11475551