Oracle Corp. on Monday promoted Clay Magouyrk and Mike Sicilia to the joint role of chief executive officer, as Safra Catz, who has led the company since 2014, steps back to become executive vice chair of the board.The 39-year-old Magouyrk has led the company’s cloud infrastructure division since 2021. He was one of the unit’s first employees after a stint at Amazon.com Inc. and rapidly climbed the ranks at Oracle. In June, he was promoted to president, a position that had him reporting directly...