Hi,
my database is AL32UTF8, I have in preferences/Files/Format/Encoding -> Always UTF8, but when I use function to compare my edit window to current database source both files ( Editor.pcf and Database.pcf ) are saved with ANSI encoding so I have all characters which are not in my ANSI codepage showed as questionmarks.

Is it a bug, or there is some other setting I am missing?

Regards,
Adam

Hi,
How about „preferences/Oracle/Options/Unicode enabled“?

That's enabled. I don't have any problems with opening files which are UTF8, typing and compiling the code. All works, and UTF8 characters are not lost. It happens only when files are saved for external comparation.

Which PL/SQL Developer version are you using?

PL/SQL Developer
Version 15.0.3.2059 (64 bit)
263.142721 - 10 user license
Service Contract: 2023-06-01
Style: Office Dark
Windows 11 Build 22621
pl-PL(1045)/Polski (Polska)

Aditionally I have NLS_LANG=polish_poland.ee8mswin1250 for my ansi codepage to oracle
and in %APPDATA%\PLSQL Developer 15\params.ini i have nls_lang=polish_poland.utf8 to compile in utf8

Can you send me a screenshot of your Preferences > Files > Format page?

My preferences attached

This seems to work fine. Can you send me a screenshot if the incorrect comparison?

I have my package body saved to file and when just after save I use Compare to -> Current file... I have Window.pcf saved as ANSI not UTF-8. See on screenshot