Number of queries for specific user

Hi all,

I would like to know if it's possible to find out how many queries (SELECT, UPDATE, INSERT, DELETE) a specific user (say SCOTT) has done since last start.
I do not want to enable auditing - so the question is if there is any view which can be queried. RDBMS Version is 8.1.6.2.0 .

	Thanks in advance !
                Klaus

P.S. What do you think would be the performance loss if I would enable Auditing on an OLTP system ?

-- 
Klaus Naumann
Database Administration
GMX  Aktiengesellschaft 
Riesstrasse 17, 80992 München 
Telefon +49.89.143 39-0
Telefax +49.89.143 39-100
mailto:knaumann_at_gmx-ag.de
http://www.gmx.net/