Oracle 字符集常見字符集及解決方案

Oracle 字符集常見字符集及解決方案

優先級別：alter session>環境變數>登錄檔>引數檔案

一.檢視字符集：

1.查詢服務端字符集：

select userenv('language') from dual

or

select * from nls_database_parameters

2.查詢客戶端：

select * from nls_instance_parameters

客戶端字符集與服務端字符集不一致就會出現亂碼等問題

3.會話字符集：

select * from nls_session_parameters

二.修改字符集：

1.修改客戶端字符集：（推薦）

開啟登錄檔：cmd-regedit

HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\KEY_OraDb10g_home1的NLS_LANG

修改NLS_LANG的值為：

比如服務端是：SIMPLIFIED CHINESE_CHINA.AL32UTF8那麼客戶端也修改成它即可

如果通過登錄檔方式還是沒有解決問題，去修改環境變數：NLS_LANG

dos命令：set nls_lang=AMERICAN_AMERICA.ZHS16GBK

2.伺服器端字符集修改：（慎重）

三.常用字符集：

ZHS16GBK

ZHS16CGB231280

AL32UTF8 9i出現的

語法：國家_時間格式.字符集格式

AMERICAN_AMERICA.ZHS16GBK

SIMPLIFIED CHINESE_CHINA.ZHS16GBK

SIMPLIFIED CHINESE_CHINA.AL32UTF8

四.字符集表：

=================================================

一、檢視字符集

C:\Users\Admin>sqlplus/nolog

SQL*Plus: Release 11.2.0.1.0 Production on 星期四 7月 19 15:30:52 2018

Copyright (c) 1982, 2010, Oracle. All rights reserved.

SQL> conn /as sysdba;
已連線。
SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production

SQL> select userenv('language') from dual;

USERENV('LANGUAGE')
----------------------------------------------------
SIMPLIFIED CHINESE_CHINA.ZHS16GBK

SQL> select * from v$nls_parameters;

PARAMETER
----------------------------------------------------------------
VALUE
----------------------------------------------------------------
NLS_LANGUAGE
SIMPLIFIED CHINESE

NLS_TERRITORY
CHINA

NLS_CURRENCY
￥


PARAMETER
----------------------------------------------------------------
VALUE
----------------------------------------------------------------
NLS_ISO_CURRENCY
CHINA

NLS_NUMERIC_CHARACTERS
.,

NLS_CALENDAR
GREGORIAN


PARAMETER
----------------------------------------------------------------
VALUE
----------------------------------------------------------------
NLS_DATE_FORMAT
DD-MON-RR

NLS_DATE_LANGUAGE
SIMPLIFIED CHINESE

NLS_CHARACTERSET
ZHS16GBK


PARAMETER
----------------------------------------------------------------
VALUE
----------------------------------------------------------------
NLS_SORT
BINARY

NLS_TIME_FORMAT
HH.MI.SSXFF AM

NLS_TIMESTAMP_FORMAT
DD-MON-RR HH.MI.SSXFF AM


PARAMETER
----------------------------------------------------------------
VALUE
----------------------------------------------------------------
NLS_TIME_TZ_FORMAT
HH.MI.SSXFF AM TZR

NLS_TIMESTAMP_TZ_FORMAT
DD-MON-RR HH.MI.SSXFF AM TZR

NLS_DUAL_CURRENCY
￥


PARAMETER
----------------------------------------------------------------
VALUE
----------------------------------------------------------------
NLS_NCHAR_CHARACTERSET
AL16UTF16

NLS_COMP
BINARY

NLS_LENGTH_SEMANTICS
BYTE


PARAMETER
----------------------------------------------------------------
VALUE
----------------------------------------------------------------
NLS_NCHAR_CONV_EXCP
FALSE


已選擇19行。

SQL> select * from nls_database_parameters;

PARAMETER
------------------------------
VALUE
--------------------------------------------------------------------------------
NLS_LANGUAGE
AMERICAN

NLS_TERRITORY
AMERICA

NLS_CURRENCY
$


PARAMETER
------------------------------
VALUE
--------------------------------------------------------------------------------
NLS_ISO_CURRENCY
AMERICA

NLS_NUMERIC_CHARACTERS
.,

NLS_CHARACTERSET
ZHS16GBK


PARAMETER
------------------------------
VALUE
--------------------------------------------------------------------------------
NLS_CALENDAR
GREGORIAN

NLS_DATE_FORMAT
DD-MON-RR

NLS_DATE_LANGUAGE
AMERICAN


PARAMETER
------------------------------
VALUE
--------------------------------------------------------------------------------
NLS_SORT
BINARY

NLS_TIME_FORMAT
HH.MI.SSXFF AM

NLS_TIMESTAMP_FORMAT
DD-MON-RR HH.MI.SSXFF AM


PARAMETER
------------------------------
VALUE
--------------------------------------------------------------------------------
NLS_TIME_TZ_FORMAT
HH.MI.SSXFF AM TZR

NLS_TIMESTAMP_TZ_FORMAT
DD-MON-RR HH.MI.SSXFF AM TZR

NLS_DUAL_CURRENCY
$


PARAMETER
------------------------------
VALUE
--------------------------------------------------------------------------------
NLS_COMP
BINARY

NLS_LENGTH_SEMANTICS
BYTE

NLS_NCHAR_CONV_EXCP
FALSE


PARAMETER
------------------------------
VALUE
--------------------------------------------------------------------------------
NLS_NCHAR_CHARACTERSET
AL16UTF16

NLS_RDBMS_VERSION
11.2.0.1.0


已選擇20行。