Larry's buying spree continues -- and this time, the one-stop software shop is looking to rival IBM as the benefactor of the open-source movement. (Yeah, I know, it's got a far ways to go -- but don't tell Larry or his ambition that.) Oracle is apparently in deep talks with JBoss, Zend (PHP) and Sleepycat Software. A successful acquisition of those firms would put Oracle in the position to shift its revenue model from licensing to subscriptions. Since open source software is free, Oracle would sell maintenance, support and consulting. Oracle already had a deep and wide customer base, so they're setting themselves up to capitalize on that base. In effect, Larry is continuing on his master plan to be the one-stop software shop for businesses.