linux操作系统环境变量LANG和NLS_LANG的区别

export LANG=zh_CN.GB2312
export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

$export LANG=zh_CN.GB2312
$date
2012年 11月 27日 星期二 16:20:35 CST

$export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

$sqlplus / as sysdba
SQL*Plus: Release 10.2.0.4.0 - Production on Tue Nov 27 16:19:03 2012
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
SQL> select sysdate from dual;

SYSDATE
------------
27-NOV-12

[root@blliu tmp]# locale
LANG=zh_CN.gb2312
LC_CTYPE="zh_CN.gb2312"
LC_NUMERIC="zh_CN.gb2312"
LC_TIME="zh_CN.gb2312"
LC_COLLATE="zh_CN.gb2312"
LC_MONETARY="zh_CN.gb2312"
LC_MESSAGES="zh_CN.gb2312"
LC_PAPER="zh_CN.gb2312"
LC_NAME="zh_CN.gb2312"
LC_ADDRESS="zh_CN.gb2312"
LC_TELEPHONE="zh_CN.gb2312"
LC_MEASUREMENT="zh_CN.gb2312"
LC_IDENTIFICATION="zh_CN.gb2312"
LC_ALL=

SQL> SELECT *
2 FROM DATABASE_PROPERTIES
3WHERE PROPERTY_NAME IN
4('NLS_LANGUAGE', 'NLS_TERRITORY', 'NLS_CHARACTERSET');

PROPERTY_NAMEPROPERTY_VALUE DESCRIPTION
------------------------------ ------------------------------ --------------------
NLS_LANGUAGE AMERICAN Language
NLS_TERRITORYAMERICATerritory