Oracle Database Discussions

It would be helpful if FBIs were supported on ~object datatypes~ [Abstract datatypes] (edited).
Currently, that doesn’t seem to be possible:

create index lines_fbi_sdo_idx on lines (id, startpoint_sdo_geom(shape));

ORA-02327: cannot create index on expression with datatype ADT
02327. 00000 -  "cannot create index on expression with datatype %s"
*Cause:    An attempt was made to create an index on a non-indexable
           expression.
*Action:   Change the column datatype or do not create the index on an
           expression whose datatype is one of  VARRAY, nested table, object,
           LOB, or  REF.