一、 问题

安装Oracle 11g 时候，没有选择字符集，只是默认的AMERICAN_AMERICA.WE8MSWIN1252 导致用navicat查询的时候，中文是乱码

二、解决办法

centos 用oracle 账户登录 输入

sqlplus

sys   as  sysdba

sql>

shutdown immediate

Database closed. Database dismounted. ORACLE instance shut down.

sql>

startup mount

ORACLE instance started.

Total System Global Area 3290345472 bytes Fixed Size 2180224 bytes Variable Size 1795165056 bytes Database Buffers 1476395008 bytes Redo Buffers 16605184 bytes Database mounted.

sql>

alter system enable restricted session;

System altered.

sql>

show parameter job_queue_processes;

NAME TYPE VALUE

job_queue_processes integer 1000

sql>

show parameter aq_tm_processes;

NAME TYPE VALUE

aq_tm_processes integer 0

sql>

alter system set job_queue_processes=0;

System altered.

sql>

alter database open ;

Database altered.

sql>

alter database character set internal_use ZHS16GBK;

Database altered.

sql>

select * from nls_database_parameters where parameter='NLS_CHARACTERSET';

PARAMETER

VALUE

NLS_CHARACTERSET ZHS16GBK

sql>

shutdown immediate

Database closed. Database dismounted. ORACLE instance shut down.

sql>

startup mount

ORACLE instance started.

Total System Global Area 3290345472 bytes Fixed Size 2180224 bytes Variable Size 1795165056 bytes Database Buffers 1476395008 bytes Redo Buffers 16605184 bytes Database mounted.

sql>

alter system set job_queue_processes=1000;

System altered.

sql>

alter database open;

Database altered.