Access violation at address 0000000000974611 in module 'plsqldev.exe'. Write of address 000004300000

[Guillermo]

From PL/SQL Version 11.0.6.1796 I'm getting that error from a simple select * from "table" running over 64 bit windows 2016 server.

 

[Marco Kalter]

Can you try the same with the 64 bit version of PL/SQL Developer 12.0? It can be downloaded here:
https://www.allroundautomations.com/download.html