【故障处理】ORA-12162: TNS:net service name is incorrectly specified

一.1  场景

今天拿到一个新的环境，可是执行sqlplus / as sysdba的时候不能登录，报ORA-12162: TNS:net service name is incorrectly specified的错误，之前没有碰到过，就随时记录下，备查。

一.2  实验还原

Last unsuccessful login: Thu Mar 19 16:59:06 BEIST 2015 on /dev/pts/0 from 200.31.177.54

Last login: Thu Jul 16 22:44:20 BEIST 2015 on ftp from ::ffff:200.31.156.201

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oracle@SJCk4:/home/oracle>

oracle@SJCk4:/home/oracle>

oracle@SJCk4:/home/oracle>ps -ef|grep ora_pmon_

oracle  348182       1   0   Apr 25      -  7:42 ora_pmon_DATAWDB

oracle  630842       1   0   Apr 25      - 20:02 ora_pmon_COGDB

oracle  843948       1   0   Apr 25      -  6:45 ora_pmon_ETLDB

oracle 5005418 4427974   0 09:44:03  pts/0  0:00 grep ora_pmon_

oracle@SJCk4:/home/oracle>ORACLE_SID=DATAWDB

oracle@SJCk4:/home/oracle>echo $ORACLE_SID

DATAWDB

oracle@SJCk4:/home/oracle>

oracle@SJCk4:/home/oracle>sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jul 17 09:56:44 2015

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

ERROR:

ORA-12162: TNS:net service name is incorrectly specified

Enter user-name:

ERROR:

ORA-12162: TNS:net service name is incorrectly specified

Enter user-name:

ERROR:

ORA-12162: TNS:net service name is incorrectly specified

SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus

oracle@SJCk4:/home/oracle>echo $ORACLE_HOME

/app/oracle/product/10.2.0/db_1

oracle@SJCk4:/home/oracle>echo $ORACLE_SID

DATAWDB

oracle@SJCk4:/home/oracle>

oracle@SJCk4:/home/oracle>

oracle@SJCk4:/home/oracle>

oracle@SJCk4:/home/oracle>

oracle@SJCk4:/home/oracle>export ORACLE_SID=DATAWDB

oracle@SJCk4:/home/oracle>sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Fri Jul 17 09:59:27 2015

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

SQL>

SQL>

一.3  总结

[oracle@rhel6_lhr ~]$ oerr ora 12162

12162, 00000, "TNS:net service name is incorrectly specified"

// *Cause:  The connect descriptor corresponding to the net service name in

// TNSNAMES.ORA or in the directory server (Oracle Internet Directory) is

// incorrectly specified.

// *Action: If using local naming make sure there are no syntax errors in

// the corresponding connect descriptor in the TNSNAMES.ORA file. If using

// directory naming check the information provided through the administration

// used for directory naming.

[oracle@rhel6_lhr ~]$

可以确定的是ORA-12162是由于ORACLE_SID未设置或者设置不正确导致的，推荐使用export ORACLE_SID=XXX来设置，当不能设置的时候再用ORACLE_SID=XXX来直接设置。

另外的一篇blog参考：http://blog.itpub.net/26736162/viewspace-1735917/

一.4  About Me

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本文作者：小麦苗，只专注于数据库的技术，更注重技术的运用

ITPUB BLOG：http://blog.itpub.net/26736162

本文地址：http://blog.itpub.net/26736162/viewspace-1736192/

本文pdf版：http://yunpan.cn/QCwUAI9bn7g7w  提取码：af2d

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创作时间地点：2015-07-17 10:00~ 2015-07-17 19:00 于外汇交易中心

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