How to trace a USER in oracle?

Question

Hi Sir,
I have a rquirement that I need to Trace a session created through the Application. The only data I have is that I know the application will connect to a Database schema and nothing else. How is it possilbe that I can create a trace file for it.
Also is it possilble, that i can trace complete user. how to find all the trace as it create number of process inturn number of trace, how do I find it and combine. I read the documentation but can't understand it clearly?
Any help will be great.

Answer 1

sanora600 wrote:
Aman, thanks for replying. This is the problem, they have not implemented dbms_application_info.
That is the reason I want to know how to trace user(all session of a schema) and combine all the session generated trace(something like trcsess) and then generate tkprof. I am on Oracle 10g.Well, first off, users connect to databases, they don't connect to schemas. And as a follow on, users have sessions, schemas don't.
That said, you might investigate a logon trigger that initiates a 1046 trace. Something like this:
-- create a logon trigger for capturing extended trace data
-- NOTE: must be run as SYS
-- NOTE: Be sure to change both occurances of the target username
-- ('user = xxx' and 'TRACEFILE_IDENTIFIER=') to the
-- correct value for the session you want to trace.
create or replace trigger logon_trigger
after logon on database
begin
if (user = 'SCOTT' ) then
execute immediate 'ALTER SESSION SET TRACEFILE_IDENTIFIER=''SCOTT_APP''';
execute immediate 'alter session set timed_statistics=true';
execute immediate 'ALTER SESSION SET EVENTS ''10046 TRACE NAME CONTEXT FOREVER, LEVEL 12''';
end if;
exception
when others then
null;
end;
end;
Of course, you can play around with the 'if' condition, and delete or disable the trigger when it is no longer needed. The resulting trace file can be run through tkprof.
Edited by: EdStevens on Dec 19, 2008 9:03 AM