Resolving Oracle English Characters Garbled Issues（oracle英文乱码）

Orcale database exists in many countries and regions, and each country and region has their own language, characters and encoding system. Oracle will garble on its English characters when special characters and even Chinese characters are stored in the Oracle database, which will cause big trouble for developers and system maintenance personnel. This article mainly introduces some solutions to solve the Oracle English character garbled problem.

The first step to fix the Oracle English character garbled issue is to determine the source of the garbled problem. Generally speaking, such issues are due to encoding settings of the Oracle database. If the encoding settings are not configured correctly or the encoding settings of the languages are inconsistent, garbled issue will happen.

To verify the encoding settings of the Oracle database, developers can use the following command to query the settings of the character set and the NLS_LANG settings of the Oracle database:

“`sql

SELECT * FROM NLS_DATABASE_PARAMETERS WHERE PARAMETER LIKE ‘%CHARACTERSET%’;

If you find that the encoding settings of the Oracle database do not match the settings before programming language was written, you can modify the NLS_LANG parameter in the environment variable to ensure that the Oracle database and the programming language are used with the same encoding format.

If the encoded settings are normal, you can try to adjust the coding format in the programming language. Generally speaking, the format UTF8 is used in the program. If not, garbled will happen when Chinese characters and special characters are stored in the databae. 

In addition, if your program mainly uses the Web, then you may have to adjust the encoding format of the Web to UTF-8 format. Generally speaking, such format is set in a configuration file such as web.xml.

In summary, resolving Oracle English character garbled issues is mainly caused by incorrect encoding settings of the Oracle database. When encountering such issues, developers need to adjust the encoding settings in the Oracle database, programming language and web configuration files, etc. to ensure that the coding formats are consistent.