How to solve Chinese garbled characters in Linux oracle

When the Linux system and Oracle database are run in the Chinese environment, Chinese garbled characters sometimes appear. This situation is very troublesome, because Chinese garbled characters not only affect the viewing of data, but also affect the storage and operation of data. This article will introduce how to solve the problem of Chinese garbled characters in Linux systems and Oracle databases.

1. Linux system Chinese garbled code processing

The configuration of the Chinese environment of the Linux system is very important to solve the Chinese garbled problem. First, you need to confirm whether the Chinese fonts are installed on the Linux system. Use the command fc-list to view the fonts currently installed on the Linux system. If there are no Chinese fonts, you need to install Chinese fonts first.

To install Chinese fonts, you can use the following command:

sudo apt-get install ttf-wqy-zenhei

After installing Chinese fonts, you need to configure the locale of the Linux system. In the /etc/environment file, set the value of LANG to zh_CN.UTF-8.

LANG=zh_CN.UTF-8

Then remove the comments of the following two lines in the /etc/locale.gen file, and execute the locale-gen command in the terminal to make the settings take effect.

#en_US ISO-8859-1
#en_US.UTF-8 UTF-8
zh_CN.UTF-8 UTF-8

Finally, execute the source /etc/environment command in the terminal to reload the environment variables.

2. Oracle database Chinese garbled code processing

There are two main aspects in dealing with Chinese garbled code problems in Oracle database:

(1) Database character set setting

If the database character set uses a non-UTF-8 character set, the problem of Chinese garbled characters will occur. Therefore, the database character set needs to be set to UTF-8. In Oracle, you can use the following command to modify the database character set:

ALTER DATABASE CHARACTER SET INTERNAL_USE UTF8;

Note: Modifying the character set must be done after backing up the database, otherwise data damage may occur.

(2) Client character set setting

Client character set setting means that when the client accesses the Oracle database, the client needs to set the character set for accessing the database to UTF-8. In Oracle, you can use the following command to modify the client character set:

ALTER SESSION SET NLS_LANG='SIMPLIFIED CHINESE_CHINA.UTF8';

where 'SIMPLIFIED CHINESE_CHINA.UTF8' is the UTF-8 character set supported by the Oracle database. In Windows operating systems, the NLS_LANG environment variable can be set in the registry or in the user environment variable. In Linux systems, it can be set in the bashrc file.

In short, when dealing with the problem of Chinese garbled characters in Oracle database, you need to set both the database character set and the client character set to UTF-8, so as to effectively solve the problem of Chinese garbled characters.

Summary

There are many solutions to Chinese garbled characters in Linux systems and Oracle databases, but the most critical thing is to set the character set. Only by setting both the database character set and the client character set to UTF-8 can the problem of Chinese garbled characters be effectively solved. During the actual operation, you need to pay attention to details such as backing up data and reloading environment variables after modifying settings to ensure safe and normal operations.

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