Oracle client encoding

I am trying to make development environment on other pc. Installed oracle client 19, PL/SQL Developer.

Here is nls_parameters from server:

Accordingly i set NLS_LANG on client in registry:

But, i still get nonsense in PL/SQL Developer:

And in sqlplus:

SQL> select * from adm_org;

    ORG_ID
----------
ORG_NAME
--------------------------------------------------------------------------------
ORG_FULL_NAME
--------------------------------------------------------------------------------
         1
─σ≡µαΓφΦΘ ßε≡π
╙∩≡αΓδ│φφ  Σσ≡µαΓφΦ∞ ßε≡πε∞

         2
╠╘╬ ≥α ╠╥─
╙∩≡αΓδ│φφ  ╠╘╬ ≥α Ωεε≡ΣΦφα÷│  ╠╥─

Then i tried this with SQL Developer and it was a successful. But SQL Developer uses separate client to connect to Oracle. It seems that it uses Cp1252. Supported character sets only have WE8MSWIN1252 and it didn't fixed the problem.

What am i missing? Character set supposed to be the same on client and server? I have never had such problems before, everything was fixed by setting NLS_LANG.

Solution

SQL Developer is a Java/JDBC based client, it does not use NLS_LANG settings.

PL/SQL Developer I do not know, have a look at the settings.

sqlplus inherits characters set from command line. Try this

chcp 1251
SET NLS_LANG=.CL8MSWIN1251
sqlplus ...

It is not required to have the same character set on database and client (although it is a good idea to have them the same). Important part is that NLS_LANG value declares the real character set which is used by the client. And the client character set should support all characters which are supported by the database.