If Oracle ends up owning Sun Microsystems, it's got a one-off opportunity to correct the mistakes of the past when it comes to working with open source on Java. The database giant should relax Sun's tight control over the Java Community Process (JCP), the body responsible for stewarding Java. And as part of this, Oracle should solve the long-running and contentious issue of open-sourcing the test compatibility kits (TCKs) that test implementations of Java.