SQL & PL/SQL

Hello Experts!

I have a question about cartesian join query which might look a bit weird.

Assume the SQL query like that:

SELECT DISTINCT A.NAME
FROM A, B, C;

Here we have cartesian join for 3 tables A, B and C.
It looks to me, in order to get the result for such a particular SQL tables/sets B and C need to be accessed only to ensure they return at least 1 row (otherwise result set is empty), query table A, but there is no actual need to join the data.
If you run such a query Oracle is doing full table scans and actually joins the data.
Yes, DBMS is doing exactly what you are asking for, but I wonder if there is any way (SQL hint or db parameter or anything else) to enforce more optimal access path here?

Obvious solution to remove B and C tables from the SELECT statement is not acceptable. :-)

Thank you!