Oracle CEO Larry Ellison delivers his keynote address at Oracle OpenWorld in San Francisco, California, in this September 24, 2008 file photo. Ellison on May 7, 2009, dispelled speculation that he will divest the hardware business of Sun Microsystems Inc, which his company plans to buy for more than $7 billion. Ellison shook up Silicon Valley in April 2009 by unexpectedly signing a deal to buy Sun, the world's No. 4 maker of server computers and also the developer of Java and Solaris software.