By Arsheeya Bajwa (Reuters) -Oracle on Monday named insiders Clay Magouyrk and Mike Sicilia as co-CEOs, replacing Safra Catz, who was instrumental in shaping the company's cloud strategy and thrusting it to the forefront of the ongoing AI boom with big contract wins. In her 11 years at the helm, Catz turned Oracle into a cloud powerhouse from a database provider by fiercely competing for a share of the lucrative data center business with Microsoft and Alphabet , while helping drive its market capitalizat ...