ORACLE11G 字符集更改(这里更改为AL32UTF8)
ORACLE11G 字符集更改(这里更改为AL32UTF8)
更改步骤:1、用sysdba角色用户登录sqlplus: 命令行输入:sqlplus sys as sysdba
2、输入口令,进入sqlplus:sql>---
3、依次键入下面的命令行执行:
shutdown immediate;
STARTUP MOUNT;
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 INTERNAL_USE AL32UTF8;
ALTER SESSION SET SQL_TRACE=FALSE;
shutdown immediate;
startup;
风险分析:执行上述命令,有可能造成数据库中已有数据混乱的情况,所以在进行操作前,
要进行数据库的备份操作;
结果查看:察看 NLS_LANG 信息:
SELECT parameter, value FROM v$nls_parameters WHERE parameter LIKE '%CHARACTERSET';
NLS_LANG 信息已经变成:
NLS_CHARACTERSET
AL32UTF8
NLS_NCHAR_CHARACTERSET
AL16UTF16