I apologize for posting for that 2.1 feature (I thaugth it was 2.0).

rem: Your answer doesn't provide the correct result, I have found a
solution modifying the statement from:

select list(column_name) from all_tab_columns
where table_name='VV'
order by column_id;

to

select list(column_name) from
(select * from all_tab_columns
where table_name='VV'
order by column_id);

Regards
PAscal