\>sqlplus "/ as sysdba"

SQL*Plus: Release 9.2.0.4.0 - Production on Sat Nov 1 10:52:30 2003

Copyright (c) 1982, 2002, Oracle Corporation.? All rights reserved.


Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> STARTUP MOUNT;
ORACLE instance started.

Total System Global Area?? 76619308 bytes
Fixed Size?????????????????? 454188 bytes
Variable Size????????????? 58720256 bytes
Database Buffers?????????? 16777216 bytes
Redo Buffers???????????????? 667648 bytes
Database mounted.
SQL> ALTER SESSION SET SQL_TRACE=TRUE;

Session altered.

SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;

System altered.

SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;

System altered.

SQL> ALTER SYSTEM SET AQ_TM_PROCESSES=0;

System altered.

SQL> ALTER DATABASE OPEN;

Database altered.

SQL> set linesize 120;
SQL> alter database character set zhs16gbk;
　　alter database character set zhs16gbk
　　*
　　ERROR at line 1:
　　ORA-12712: new character set must be a superset of old character set

SQL> ALTER DATABASE character set INTERNAL_USE zhs16gbk; # 使用INTERNAL_USE可以跳过超集的检查,ALTER DATABASE character set INTERNAL_USE

　　Database altered.

SQL> ALTER SESSION SET SQL_TRACE=FALSE;

SQL> shutdown immediate;
??????? Database closed.
　　Database dismounted.
　　ORACLE instance shut down.
SQL> STARTUP
　　ORACLE instance started.

　　Total System Global Area 235999352 bytes
　　Fixed Size 450680 bytes
　　Variable Size 201326592 bytes
　　Database Buffers 33554432 bytes
　　Redo Buffers 667648 bytes
　　Database mounted.
　　Database opened.

SQL> select name,value$ from props$ where name like ''%NLS%'';

NAME?????????????????????????? VALUE$
------------------------------ ------------------------------
NLS_LANGUAGE?????????????????? AMERICAN
NLS_TERRITORY????????????????? AMERICA
NLS_CURRENCY?????????????????? $
NLS_ISO_CURRENCY?????????????? AMERICA
NLS_NUMERIC_CHARACTERS???????? .,
NLS_CHARACTERSET?????????????? ZHS16GBK
…..
NLS_NCHAR_CHARACTERSET???????? AL16UTF16
NLS_RDBMS_VERSION????????????? 9.2.0.4.0

20 rows selected.