The Wall Street Journal says it has confirmed rumors that John Wookey, Oracle’s well-known head of application development for Fusion Applications, is out. According to the report, Wookey will be replaced with Thomas Kurian, Oracle’s senior vice president responsible for Oracle’s Fusion Middleware.

All of this executive shuffling is leading many to wonder if problems have arisen with Oracle Fusion — Oracle’s plan to combine the “best-of” functionality from at least four different acquired application suites, including PeopleSoft, JD Edwards, Siebel and Hyperion, onto a single service-enabled platform.

It will be interesting to see what Oracle has to say about all this, but for now, the company brass is keeping quiet.