DBA_ATTRIBUTE_TRANSFORMATIONS displays information about the transformation functions for all transformations in the database. Its columns are the same as those in ALL_ATTRIBUTE_TRANSFORMATIONS.
ALL_ATTRIBUTE_TRANSFORMATIONS displays information about the transformation functions for the transformations accessible to the current user.
USER_ATTRIBUTE_TRANSFORMATIONS displays information about the transformation functions for the transformations owned by the current user. This view does not display the OWNER column.