Well if you are using Oracle products EBS & Databases then Oracle Linux KVM and Oracle VM Server are the best choices for performance. If we compare OVM and KVM, OVM is the most reliable and gives better performance.
Regarding a guest OS, you can test Oracle Linux 6 & 7 and RHEL 6,7 & 8 for testing purposes.
In downgrade OS (either Windows or Linux), you may face keyboard/mouse inactive situations.
Well if you are using Oracle products EBS & Databases then Oracle Linux KVM and Oracle VM Server are the best choices for performance. If we compare OVM and KVM, OVM is the most reliable and gives better performance.
Regarding a guest OS, you can test Oracle Linux 6 & 7 and RHEL 6,7 & 8 for testing purposes.
In downgrade OS (either Windows or Linux), you may face keyboard/mouse inactive situations.
Regards