The solution of using sqlplus to display Chinese as garbled code

     The company is still using oracle database , occasionally , Only use sqlplus To log in to the database . Refer to the information on the Internet , For solution sqlplus To show the problem that Chinese is garbled .
1、 Use sqlplus Sign in oracle database , View character set
SQL> select userenv('language') from dual;

USERENV('LANGUAGE')
----------------------------------------------------
AMERICAN_AMERICA.ZHS16GBK

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

2、 View the character set of the session logging into the operating system
[[email protected] ~]$ echo $NLS_LANG
AMERICAN_AMERICA.ZHS16GBK

3、 Modify the character set of this session
export NLS_LANG=AMERICAN_AMERICA.UTF8

4、 Log in to the database again