Oracle Office Buildings at Redwood City Headquarters (Photo by Christopher J. Morris/CORBIS/Corbis via Getty Images) REDWOOD CITY, Calif. - Oracle Corporation, a multi-billion dollar software and technology company, is the latest tech giant to announce they're leaving Silicon Valley for Texas.The company is by far the largest employer in Redwood City, with over 6,500 employees, representing 13.5% of the jobs in that city, according to city data.Oracle made the announcement Friday afternoon and was first reported by Bloomberg.Oracle was founded in 1977 by Larry Ellison in Santa Clara.