garbled when querying Oracle database using Plsql developer and Dbvisualizer

When querying Oracle database using Plsql Developer and Dbvisualizer, query data is garbled in Chinese.

Look at the database encoding format
SELECT * from V$nls_parameters;

View the encoded value as WE8ISO8859P1. and the computer environment variable Nls_lang value is American_america. ZHS16GBK. Change to
American_america. It's good to restart the tool after WE8ISO8859P1. If you do not have this environment variable, you can create a new one and change the encoded value to be consistent.

My machine is here, and it is said that there is a need to change the value in the registry.

Run---->regedit-------->f3 Find Nls_lang-----> Modify Registry (Discreet)

Hkey_local_machine/software/oracle/homeo/nls_lang

This value is changed to be consistent with the database server

Note: If you do not rest assured, modify the key value: Hkey_local_machine/software/oracle/all_homes/id0/nls_lang.

garbled when querying Oracle database using Plsql developer and Dbvisualizer