I installed EBS 12.1.3 to my laptop for testing purposes, and applied some patches. Although I carefully check the readme files of the patches, I wanted to be sure that I have followed post-installation tasks, so I tried to run Oracle Patch Application Assistant (admsi.pl). I got the following error:
Invoking Oracle Patch Application Assistant....
Please set the DISPLAY variable and re-run this script
Yes I know that it seems a very familiar problem for XWindow applications, but because I’ve logged in directly to XWindow, I shouldn’t get this error… Anyway, I checked if the DISPLAY variable is set, and see that it’s set to “:0.0” (as expected). All applications including Oracle Database Tools was working without error.