Settings for Oracle client Nls_lang (RPM)

1. Nls_lang parameter composition
The Nls_lang parameter consists of the following parts:
Nls_lang=<language>_<territory>.<clients characterset>

Nls_lang the meanings of each part are as follows:
LANGUAGE specifies:
-oracle the language used for messages
-Date month and day display
Territory Specify
-Currency and number formats
-area and calculation of week and date habits
CHARACTERSET:
-Control the character set used by the client application
Typically set or equal to a client (such as Windows) code page
Or for a Unicode app set to UTF8

To view the code page for the current system on Windows, you can use the CHCP command:
E:/>chcp
Active code page: 936

Code page 936 is the Chinese character set GBK, at Microsoft's official site, we can be about 936 code page specific coding rules, please refer to the following links:
Http://www.microsoft.com/globaldev/reference/dbcs/936.htm

2. How to view Nls_lang
Windows uses:

Echo%nls_lang%
Such as:
E:/>echo%nls_lang%
American_america. Zhs16gbk

UNIX Uses:

Env|grep Nls_lang
Such as:
/opt/oracle>env|grep Nls_lang
Nls_lang=american_china. Zhs16gbk

Windows client settings, you can change the Nls_lang in the registry, the specific key value is located in:
hkey_local_machine/software/oracle/homexx/
XX refers to the system number when there are multiple oracle_home.

3. View database current character Set parameter settings
SELECT * from V$nls_parameters;

4. View database available character Set parameter settings
SELECT * from V$nls_valid_values;

5. How to set up client Nls_lang
Windows:
# Common Chinese Character set
Set Nls_lang=simplified Chinese_china. Zhs16gbk
# Common Unicode character sets
Set Nls_lang=american_america. Al32utf8
Can be permanently set by modifying registry key values
Hkey_local_machine/software/oracle/homexx/nls_lang

Unix:
# Common Unicode character sets
Export Nls_lang=american_america. Al32utf8
# Common Chinese Character set
Export nls_lang= "Simplified Chinese_china". Zhs16gbk
You can edit the Bash_profile file for permanent setup
VI. bash_profile
nls_lang= "Simplified Chinese_china". ZHS16GBK Export Nls_lang
# Make Bash_profile settings effective
source. bash_profile

http://blog.csdn.net/wzy0623/article/details/1683337

Settings for Oracle client Nls_lang (RPM)