Oracle CEO Larry Ellison typically uses his annual OpenWorld conference keynotes to deliver the company's biggest announcements and strategic positioning, and this year they will apparently involve an in-memory database and Oracle's PaaS (platform as a service) offerings. On Sunday, Sept. 22 Ellison will deliver his first keynote, which is titled "Oracle Database 12c In-Memory Database and M6 Big Memory Machine," according to an announcement released Tuesday.