Thanks lost. But nope, didn't work. I have tried adding "SET NLS_LANG=AMERICAN_AMERICA.UTF8" in Login.sql and AfterConnect.sql (in the installation directory) and no change. Also added it in the "Initialization" tab on the Define Connections for the specific connection and it still doesn't work.

I think Pl/Sql Developer is just going to use default Windows/Oracle Home settings unless launched in an environment with the NLS_LANG set ahead of time.

Oh and for reference this is on ...
PL/SQL Developer
Version 14.0.6.1988 (32 bit)
Windows 10 (64-bit) Build 18362
en-US(1033)/English (United States)


Thanks,
Jason