Oracle provides two things: A datacenter for Nvidia chips, and health data. Oracle Cerner had a 21.7% market share for inpatient hospital Electronic Health Records (EHR). Larry Ellison specifically mentioned healthcare when announcing it in the Whitehouse.

The announcement was funny because they weren't quite sure what they are going to do in the health space. Sam Altman was asked, and he immediately deferred to Ellison and Masayoshi. Ellison was vague... it seems they know they want to do something with Ellison's massive stash of health data... but they don't quite know what they are building yet.