SQL & PL/SQL

Hi,

I'm working with Oracle since only few weeks. I worked on Informix before.
On informix we had the possibilty to put a stored procedure in trace with following line in the stored procedure :
if gv_f_trace is not null then
set debug file to gv_f_trace with append;
trace on;
end if;

So it was very easy on site or in integration system to put stored procedure traces in a file in order to analyse errors.

Is there the same "tool" with oracle PL/SQL? if not how can i do to analyse a stored procedure?

thanks,
Olivier