Well, your other option is to use FreePBX Distro, which is the recommended way to install FreePBX, as it's 100% supported, and supportable.
If there's a business case going 'We need Oracle because BUSINESS REASONS', then you should be saying 'Actually, no, if you want support, then you need to use FreePBX Distro, not Oracle'
It's RHEL Based, too, so there's no learning curve for admins.
Edit: Not saying we won't TRY to help if you have problems with Oracle, but, everyone who does commercial FreePBX support will be able to fix your problem if you're on Distro. No promises if you're not.