The problem
I was installing Oracle® XE on Fedora Linux 23 on Oracle® VirtualBox. I noticed that the database configuration assistant was just hanging forever on my desktop PC with an AMD CPU. I was not able to reproduce the same issue on a desktop PC with an Intel CPU.
The cause
I have previously encountered a similar problem with Oracle® 12c Database Configuration Assistant that hangs on Oracle® Linux 7 in VirtualBox 5, and it turned out that the solution was the same for this issue.
The solution
I found the culprit to be the Paravirtualization Interface for acceleration. Changing that from Default to None fixed the issue.
The above screen dumps were made on a virtual session for Centos 7, but it is the same workaround for Fedora Linux and Oracle® Linux running in VirtualBox too.
