Summary_修改数据库编码

-- 查询数据库表编码
SELECT * FROM V$NLS_PARAMETERS WHERE PARAMETER IN ('NLS_CHARACTERSET', 'NLS_NCHAR_CHARACTERSET');

-- 查询数据库表字段大小
SELECT * FROM V$NLS_PARAMETERS WHERE PARAMETER = 'NLS_LENGTH_SEMANTICS';

-- 修改数据库编码

SQL> SELECT USERENV('LANGUAGE') FROM DUAL;

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 CHARACTER SET INTERNAL_USE ZHS16GBK;
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP;