Oracle CEO Larry Ellison arrives to testify in the Oracle v. Google trial in San Francisco.

The second day in the probable eight-week jury trial between Silicon Valley powerhouse company’s Oracle and Google was off to a celebrity tech start on Tuesday.

Oracle CEO Larry Ellison arrived at the courthouse in San Francisco to testify in Oracle’s patent trial against Google for using programming language java in its smartphones.

Ellison entered the courthouse, where he would argue that Google ran roughshod over intellectual property rights that now belong to Oracle.

But Google attorney’s say Google built Android using parts of Java that didn't require a license and it had the full support of Sun Microsystems in doing so.

Sun was later bought by Oracle.

From San Francisco, Kerry Davis, IDG News Service.