I have installed Oracle Linux (Oracle_Developer_Day) on Oracle VM VirtualBox.
I do not know how to connect to the Application Express:
Very kindly ask for assistance in logging in to Application Express software by:
I think you are posting to wrong forum. Virtualization Discussion Forum is here. Oracle VM Server for x86
There is by default obe workspace. User and password for that workspace is obe
If you need login to APEX administration, then use apxchpwd.sql from oracle user home folder to reset INTERNAL workspace ADMIN user password.
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