What: Senior VP-CMO Where: Oracle Corp., Redwood Shores, Calif. Why: Sim, who has been at Oracle for 21 years, is responsible for all corporate marketing efforts at the company. This year, she continues to oversee Oracle’s integrated campaign, called “Software. Hardware. Complete,” which debuted two years ago after Oracle acquired Sun Microsystems. Sim has also led Oracle’s expansion in events, social media and database marketing.