ソース:[1] Oracle splits CEO role between two executives as Safra Catz steps down (https://fintel.io/news/oracle-splits-ceo-role ...)[2] Safra Catz exits as Oracle CEO after 11 years | Ctech (https://vertexaisearch.cloud.google.com/groun ...)[3] Oracle's Leadership Transition: Strategic Continuity and the Dual CEO Model's Market Implications - AInvest (https://vertexaisearch.cloud.google.com/groun ...)