HELP! OCI

Hi,
I want to know the max pos after function oparse(). Example :
SELECT ename FROM emp ; pos=1
SELECT ename,job FROM emp ; pos=2
.....
Did oparse() give me the max number pos ? Thanks for your help.

-- 
Thierry Merlin                                     Tel: +33 5 56 43 78 86
CITB BULL                                        Fax: +33 5 56 43 79 78 
207 cours du Medoc               E-mail :T.Merlin_at_citb.bull.net  
33000 BORDEAUX                       TATOO: +33 5 04 23 29 72