For the reader: Using no-cost Oracle software is playing with fire. Oracle is a machine build to extract license fees and, when necessary, to litigate.
He's not joking either. I did contracting work for hospitals, upgrading their infrastructure. Strictly backend network stuff -- routers, switches -- but got to sit in on all of the IT meetings.
Oracle asked them for license count and a core count of their environment. Newer IT guy sent them all of that info, asked for pricing for upgrades to a few newer Dell systems.
Oracle thought they were only using about 3/4 of the machines / cores / licenses they were billing them for, and promptly demanded the hospital group pay for the rest of their usage, as far back as they could prove. Lawyers got involved fast.
My work finished before it was resolved so I never got an exact answer but IIRC they paid something extra to Oracle.
