ORACLE中文乱码处理

装ORACLE后，用DBCA创建数据库，忘记在 /database/response/dbca.rsp这个文件中设置CHARACTERSET="AL32UTF8"    ，发现默认没设置的是CHARACTERSET=“WE8ISO8859P1”

下面是修改过程：

查看当前字符集

SQL> select * from v$nls_parameters;

NLS_CHARACTERSET
WE8ISO8859P1

SQL> shutdown immediate;     ---停止数据库
Database closed.
Database dismounted.
ORACLE instance shut down.

SQL> startup mount           ---启动数据库到mount状态
ORACLE instance started.

Total System Global Area 235999352 bytes
Fixed Size 450680 bytes
Variable Size 201326592 bytes
Database Buffers 33554432 bytes
Redo Buffers 667648 bytes
Database mounted.

---下面是修改过程，按步骤修改
SQL> alter session set sql_trace=true;

Session altered.

SQL> alter system enable restricted session;

System altered.

SQL> alter system set job_queue_processes=0;

System altered.

SQL> alter system set aq_tm_processes=0;

System altered.

SQL> alter database open;

Database altered.

SQL> set linesize 120;
SQL> alter database character set AL32UTF8;
alter database character set AL32UTF8
*
ERROR at line 1:
ORA-12712: new character set must be a superset of old character set

SQL> ALTER DATABASE character set INTERNAL_USE AL32UTF8;

# 使用INTERNAL_USE可以跳过超集的检查,

（ALTER DATABASE character set INTERNAL_USE ）

Database altered.
SQL> shutdown immediate;      ---再停止数据库
Database closed.
Database dismounted.
ORACLE instance shut down.

---启动数据库
SQL> STARTUP
ORACLE instance started.

Total System Global Area 235999352 bytes
Fixed Size 450680 bytes
Variable Size 201326592 bytes
Database Buffers 33554432 bytes
Redo Buffers 667648 bytes
Database mounted.
Database opened.
SQL>

 

----再次查看当前字符集

SQL> select * from v$nls_parameters;

NAME
------------------------------
VALUE$
--------------------------------------------------------------------------------
NLS_LANGUAGE
SIMPLIFIED CHINESE

NLS_TERRITORY
CHINA

NLS_CURRENCY
?

NAME
------------------------------
VALUE$
--------------------------------------------------------------------------------
NLS_ISO_CURRENCY
CHINA

NLS_NUMERIC_CHARACTERS
.,

NLS_CHARACTERSET
AL32UTF8 ---【已经修改成为中文编码了】

今天的情况特殊，修改完了，中文乱码还是“靠”字，- -

后来试着修改系统字符集

在oracle用户下 .bash_profile 文件里面加入

export NLS_LANG="Simplified Chinese_CHINA.AL32UTF8"
再次登录查看，还是就可以了