34.14. 切换字符集

34.14.1. 切换到 GBK

SQL> shutdown immediate;
SQL> startup mount;
SQL> alter system enable restricted session;
SQL> alter system set job_queue_processes=0;
SQL> alter database open;
SQL> alter database character set internal_use ZHS16GBK;
SQL> shutdown immediate;
SQL> startup
SQL> alter system disable restricted session;

34.14.2. 切到 UTF-8

sqlplus "/ as sysdba"
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 NATIONAL CHARACTER SETINTERNAL_USE UTF8;
SQL> SHUTDOWN IMMEDIATE
SQL> STARTUP

34.14.3. 切到 AL32UTF8

SQL> shutdown immediate;
SQL> startup mount;
SQL> alter system enable restricted session;
SQL> alter system set job_queue_processes=0;
SQL> alter database open;
SQL> alter database character set internal_use AL32UTF8;
SQL> shutdown immediate;
SQL> startup
SQL> alter system disable restricted session;

34.14.4. 切换过程实例

例 34.1. Oracle 字符集切换实例

C:\Users\Administrator>sqlplusSQL*Plus: Release 11.2.0.1.0 Production on Mon Nov 30 17:01:10 2015Copyright (c) 1982, 2010, Oracle.  All rights reserved.Enter user-name: sys as sysdba
Enter password:Connected to:
Oracle Database 11g Release 11.2.0.1.0 - 64bit ProductionSQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.Total System Global Area 3423965184 bytes
Fixed Size                  2180544 bytes
Variable Size            1879050816 bytes
Database Buffers         1526726656 bytes
Redo Buffers               16007168 bytes
Database mounted.
SQL> alter system enable restricted session;System altered.SQL> alter system set job_queue_processes=0;System altered.SQL> alter database open;Database altered.SQL> ALTER DATABASE character set INTERNAL_USE ZHS16GBK;Database altered.SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.Total System Global Area 3423965184 bytes
Fixed Size                  2180544 bytes
Variable Size            1879050816 bytes
Database Buffers         1526726656 bytes
Redo Buffers               16007168 bytes
Database mounted.
Database opened.
SQL> alter system disable restricted session;System altered.SQL>SQL> select userenv('language') from dual;USERENV('LANGUAGE')
----------------------------------------------------
AMERICAN_AMERICA.ZHS16GBKSQL>

原文出处：Netkiller 系列手札
本文作者：陈景峯
转载请与作者联系，同时请务必标明文章原始出处和作者信息及本声明。

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34.14. 切换字符集

34.14.1. 切换到 GBK

34.14.2. 切到 UTF-8

34.14.3. 切到 AL32UTF8

34.14.4. 切换过程实例

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