Oracle chairman and CTO Larry Ellison at the White House in 2025. —Andrew Harnik—Getty ImagesOn March 31, a longtime Oracle employee named Jill drove to the hospital for a very overdue back surgery when she received a call from her manager. Jill had worked at Oracle as a technical writer and instructor across three decades, teaching customers around the world about the company’s products. Last year, Oracle had asked her and others on her team to…