How can Oracle support Chinese characters? Language _ region. Character Set

Language _ region. Character Set SIMPLIFIEDCHINESE_CHINA.ZHS16GBKsetnls_lang

Language _ region. Character set SIMPLIFIED CHINESE_CHINA.ZHS16GBK set nls_lang =

Language _ region. Character Set
SIMPLIFIED CHINESE_CHINA.ZHS16GBK

Set nls_lang = 'simplified CHINESE_CHINA.ZHS16GBK'

Oracle modifies the server character set:
SQL> SHUTDOWN IMMEDIATE;

SQL> STARTUP MOUNT;

SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;

SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES = 0;

SQL> ALTER SYSTEM SET AQ_TM_PROCESSES = 0;

SQL> ALTER DATABASE OPEN;

SQL> ALTER DATABASE CHARACTER SET ZHS16GBK;

If an ERROR at line 1: ORA-12712: new character set must be a superset of old character set appears

SQL> ALTER DATABASE character set INTERNAL_USE zhs16gbk; # Use INTERNAL_USE to skip the superset check,

Alter database character set INTERNAL_USE

SQL> SHUTDOWN IMMEDIATE;

SQL> STARTUP and check again to find that the character set has been trimmed.

NLS_LANG = AMERICAN_AMERICA.ZHS16GBK

######################################## ######################################## ##################################

-- Current session information
SQL> select * from Nls_session_parameters;

PARAMETER VALUE
------------------------------------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTE .,
RS

NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_SORT BINARY
NLS_TIME_FORMAT HH. MI. SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH. MI. SSXFF AM
NLS_TIME_TZ_FORMAT HH. MI. SSXFF AM TZR
NLS_TIMESTAMP_TZ_FOR DD-MON-RR HH. MI. SSXFF AM TZR
MAT

NLS_DUAL_CURRENCY $
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE

17 rows selected.

-- Instance information
SQL> select * from Nls_instance_parameters;

PARAMETER VALUE
------------------------------------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_SORT
NLS_DATE_LANGUAGE
NLS_DATE_FORMAT
NLS_CURRENCY
NLS_NUMERIC_CHARACTE
RS

NLS_ISO_CURRENCY
NLS_CALENDAR
NLS_TIME_FORMAT
NLS_TIMESTAMP_FORMAT
NLS_TIME_TZ_FORMAT
NLS_TIMESTAMP_TZ_FOR
MAT

NLS_DUAL_CURRENCY
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE

17 rows selected.

-- Database information
SQL> select * from Nls_database_parameters;

PARAMETER VALUE
------------------------------------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTE .,
RS

NLS_CHARACTERSET WE8MSWIN1252
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_SORT BINARY
NLS_TIME_FORMAT HH. MI. SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH. MI. SSXFF AM
NLS_TIME_TZ_FORMAT HH. MI. SSXFF AM TZR
NLS_TIMESTAMP_TZ_FOR DD-MON-RR HH. MI. SSXFF AM TZR
MAT

NLS_DUAL_CURRENCY $
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE
NLS_NCHAR_CHARACTERS AL16UTF16
ET

NLS_RDBMS_VERSION 11.2.0.3.0

20 rows selected.

SQL> select * from v $ nls_parameters;

PARAMETER VALUE
--------------------------------------------------------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTERS .,
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_CHARACTERSET WE8MSWIN1252
NLS_SORT BINARY
NLS_TIME_FORMAT HH. MI. SSXFF AM

PARAMETER VALUE
--------------------------------------------------------------------------------
NLS_TIMESTAMP_FORMAT DD-MON-RR HH. MI. SSXFF AM
NLS_TIME_TZ_FORMAT HH. MI. SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH. MI. SSXFF AM TZR
NLS_DUAL_CURRENCY $
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE

19 rows selected.

SQL>

SQL> select * from v $ nls_parameters;

PARAMETER VALUE
------------------------------------------------------------------------------------------
NLS_LANGUAGE SIMPLIFIED CHINESE
NLS_TERRITORY CHINA
NLS_CURRENCY?
NLS_ISO_CURRENCY CHINA
NLS_NUMERIC_CHARACTERS .,
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE SIMPLIFIED CHINESE
NLS_CHARACTERSET WE8MSWIN1252
NLS_SORT BINARY
NLS_TIME_FORMAT HH. MI. SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH. MI. SSXFF AM
NLS_TIME_TZ_FORMAT HH. MI. SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH. MI. SSXFF AM TZR
NLS_DUAL_CURRENCY?
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE

19 rows have been selected.

,