修改oracle字符编码时报错ORA-12712: new character set must be a superset of old character set

2021-06-09 分类：Oracle 评论(0)

toad连接数据库
select userenv(\’language\’) from dual;

显示SIMPLIFIED CHINESE_CHINA.AL32UTF8
需要修改为 SIMPLIFIED CHINESE_CHINA.ZHS16GBK
执行
ALTER DATABASE CHARACTER SET ZHS16GBK;

报错 ORA-12712: new character set must be a superset of old character set

–ssh连接数据库

su – oracle –切换到oracle 用户

sqlplus /as sysdba

>shutdown immediate; 停止数据库
>startup mount; 把database重启到可更改状态装载数据库，打开控制文件
>ALTER SESSION SET SQL_TRACE=TRUE;
>ALTER SYSTEM ENABLE RESTRICTED SESSION;
>ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
>ALTER SYSTEM SET AQ_TM_PROCESSES=0;
>ALTER DATABASE OPEN;
>alter database character set ZHS16GBK;

ORA-12712: new character set must be a superset of old character set
RROR at line 1:

结果报错，提示新字符集必须是老字符集的超集。

于是强制转换

>ALTER DATABASE character set INTERNAL_USE ZHS16GBK;

>shutdown immediate; 停止数据库

>startup 启动数据库

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标签：Oracle