山阴客

ORACLE 修改字符集

C:\Users\Administrator>sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on 星期三 9月 30 08:24:50 2020

SQL> SQL>conn / as sysdba
SP2-0734: 未知的命令开头 "SQL>conn /..." - 忽略了剩余的行。
SQL> conn / as sysdba
已连接。
SQL> shutdown immediate
数据库已经关闭。
已经卸载数据库。
ORACLE 例程已经关闭。
SQL> STARTUP MOUNT
ORACLE 例程已经启动。

Total System Global Area 1.0289E+10 bytes
Fixed Size 2184672 bytes
Variable Size 5268048416 bytes
Database Buffers 4999610368 bytes
Redo Buffers 18771968 bytes
数据库装载完毕。
SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;

系统已更改。

SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;

系统已更改。

SQL> ALTER SYSTEM SET AQ_TM_PROCESSES=0;

系统已更改。

SQL> ALTER DATABASE OPEN;

数据库已更改。

SQL> ALTER DATABASE CHARACTER SET ZHS16GBK;
ALTER DATABASE CHARACTER SET ZHS16GBK
*
第 1 行出现错误:
ORA-12712: 新字符集必须为旧字符集的超集

SQL> ALTER DATABASE character set INTERNAL_USE ZHS16GBK;

数据库已更改。

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

已选择19行。

SQL> shutdown immediate;
数据库已经关闭。
已经卸载数据库。
ORACLE 例程已经关闭。
SQL> startup
ORACLE 例程已经启动。

Total System Global Area 1.0289E+10 bytes
Fixed Size 2184672 bytes
Variable Size 5268048416 bytes
Database Buffers 4999610368 bytes
Redo Buffers 18771968 bytes
数据库装载完毕。
数据库已经打开。
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

已选择19行。

SQL>

select userenv('language') from dual;

select * from v$nls_parameters where parameter in ( 'NLS_LANGUAGE','NLS_TERRITORY','NLS_CHARACTERSET');