Da in der aktuellen MapViewer Version die Google Tiles direkt unterstützt werden, liegt es nahe, dass Oracle nun auch in der Oracle Spatial Datenbank den Ansatz von Google unterstützt:
Support for Google Maps with Oracle Spatial applications has been enhanced. You can now specify a use case name of USE_SPHERICAL with the SDO_CS.TRANSFORM function or the SDO_CS.TRANSFORM_LAYER procedure, to have Spatial use spherical math (used by Google Maps) instead of ellipsoidal math in its projections. For more information, see Section 6.12, “Google Maps Considerations”.
