I am new to this group. I need your help in resolving an issue I am facing. I downloaded the Oracle Database 19c (19.3.0) Upgrade and Migration hands-on Lab provided by Oracle. I unzipped all the files downloaded and it crated a single .ova file. I am running Oracle Enterprise Linux 7.6 on which I have a VirtualBox 5.3.30 running. I imported the .ova file and made sure the RAM is at 8 GB and the CPUs are at 4, before starting the VM. The VM boots up but I get a Black screen, and there is no login screen. Has anybody come across similar issue? If yes, what is the resolution to get the VM Login screen and proceed with the Lab. Your help in this regard would be very helpful.