Apache Harmony is Apache Licensed, and that license is only comaptible with GPL3+. OpenJDK is GPL2 + classpath exception, so no, Harmony is not a valid derivative work of OpenJDK.<p>Since the only free software Oracle still maintains is the stuff they couldn&#x27;t relicense from Sun, and the acquisition was before the GPL3 was finalized and even then Sun would not have been able to relicense all their stuff before being bought out, there is no chance of any Oracle products being Apache compatible in the future.