修改oracle编码格式

文章参照：https://www.jb51.net/article/53078.htm

1.查看oracle当前编码格式：

SELECT * FROM V$NLS_PARAMETERS WHERE PARAMETER = 'NLS_CHARACTERSET' ;
SELECT USERENV('language') FROM DUAL;

   NLS_CHARACTERSET    AL32UTF8   

   SIMPLIFIED CHINESE_CHINA.AL32UTF8 

2.以sysdba身份登录

3.关闭数据库 shutdown immediate;

4.以mount打来数据库，startup mount

5.设置session

SQL>ALTER SYSTEM ENABLE RESTRICTED SESSION;
SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
SQL> ALTER SYSTEM SET AQ_TM_PROCESSES=0;

6.启动数据库

alter database open;

7.修改字符集

ALTER DATABASE CHARACTER SET ZHS16GBK;

提示我们的字符集：新字符集必须为旧字符集的超集:

ALTER DATABASE character set INTERNAL_USE ZHS16GBK;

8.关闭，重新启动

shutdown immediate;

startup

原文地址;https://blog.csdn.net/u011229848/article/details/82384022