While it has be more than a year that Oracle acquired Primavera, but till date Oracle staff continue to use Microsoft Project for internal project management.
Facing cost pressures, there are indications that this may change from 2010 and Oracle staff will transition to Primavera for their internal project management needs and thus save Oracle some millions in the license fee they pay to Microsoft
It took a long time coming but the change is expected to come in effect from 2010