ORA-12154 和 TNS-03505 监听错误的解决方法
ORA-12154 和 TNS-03505 监听错误的解决方法
今天在笔记本上本来想做个exp的测试的时候突然报错：
用tnsping 一下：
C:\>tnsping wwl;
TNS Ping Utilityfor 64-bit Windows: Version 10.2.0.4.0 - Production on 21-APR-2012 18:27:52
Copyright (c)1997, 2007, Oracle. All rights reserved.
Used parameterfiles:
C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
TNS-03505:Failed to resolve name
C:\>
上网google了一下，说是环境变量有问题。 看了一下，环境变量确实有点问题。 Oracle的path 是放在中间，，官方要求是将Oracle的path放到最前面。 这里要注意的地方，如果在界面上来修改环境变量，是需要重启电脑的。这样太麻烦了。 直接在dos里修改，就不用重启了，这样也方便很多。
1. 在界面修改
我的电脑->属性->高级->环境变量，找到PATH，把里面的顺序改一下，顺便看一下ORACLE_HOME这个变量，如果没有，就加上去。
这种修改方法需要重新启动电脑。
C:\>echo%path%
C:\oracle\Client;C:\oracle\product\10.2.0\db_1\bin;C:\ProgramFiles\Common Files\Microsoft Shared\Wi
ndows Live;C:\ProgramFiles (x86)\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\
CommonFiles\NetSarang;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\W
indowsPowerShell\v1.0\;C:\ProgramFiles (x86)\Windows Live\Shared;C:\Program Files (x86)\Lenovo\Acce
ssConnections\;C:\Program Files (x86)\UltraEdit\;C:\Program Files(x86)\DBank\ClickUp;C:\Program Fi
les(x86)\DBank\ClickUp
C:/ >set PATH=C:\oracle\product\10.2.0\db_1\bin;C:\oracle\Client;C:\ProgramFiles\Common Files\Microsoft Shared\Wi
ndowsLive;C:\Program Files (x86)\Common Files\Microsoft Shared\WindowsLive;C:\Program Files (x86)\
CommonFiles\NetSarang;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\W
indowsPowerShell\v1.0\;C:\ProgramFiles (x86)\Windows Live\Shared;C:\Program Files (x86)\Lenovo\Acce
ssConnections\;C:\Program Files (x86)\UltraEdit\;C:\Program Files(x86)\DBank\ClickUp;C:\Program Fi
les(x86)\DBank\ClickUp
C:/Documents andSettings/user.HQ-TEXT>echo %PATH%
C:\oracle\product\10.2.0\db_1\bin;C:\oracle\Client;C:\ProgramFiles\Common Files\Microsoft Shared\Wi
ndowsLive;C:\Program Files (x86)\Common Files\Microsoft Shared\WindowsLive;C:\Program Files (x86)\
CommonFiles\NetSarang;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\W
indowsPowerShell\v1.0\;C:\ProgramFiles (x86)\Windows Live\Shared;C:\Program Files (x86)\Lenovo\Acce
ssConnections\;C:\Program Files (x86)\UltraEdit\;C:\Program Files(x86)\DBank\ClickUp;C:\Program Fi
les(x86)\DBank\ClickUp
C:\>tnspingwwl
TNS Ping Utilityfor 64-bit Windows: Version 10.2.0.4.0 - Production on 21-APR-2012 18:37:12
Copyright (c)1997, 2007, Oracle. All rights reserved.
Used parameterfiles:
C:\oracle\product\10.2.0\db_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attemptingto contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST =ThinkPad)(PO
RT =1521))) (CONNECT_DATA = (SERVICE_NAME = WWL)))
OK(30 msec)
C:\>在DOS窗口修改后，我们可以检查“我的电脑”->“属性”->“高级”->“环境变量”中设置的 PATH 值，它也自动修改了。不用担心DOS窗口中的修改会影响环境变量的值，DOS窗口中的环境变量只是Windows环境变量的一个副本而已。但是对副本的修改却会引发Windows环境变量的刷新，这就达到了我们不用重启电脑的目的。
更多Oracle相关信息见Oracle 专题页面 ?tid=12
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