Trace a user

I need trace a user (no the session), because I want to check what events occurred during the connection process. This is because the user takes to much time to get connect.
Can anybody tell me how to do it?
Thanks

You could do a client side trace. This will show everything that happens on the client side as soon as a logon is attempted.
keep an eye on sql stmt
Ignore the second part of the post in the link, it's for tracing individual sessions.

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sufficient auth. is provided.
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ST10 traces 1 instance only.
Your CRM web interface could use another instance than your backend. Go to transaction SM21, choose the appropriate server and run ST10 again.
Succes!
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Even if I've got no DBA permission (for example I don't see the v$session table), have I got any way to trace the users accessing the DB? How can I do? I was told about trace but can someone tell me more? I'd like to know the user accessing the DB and the operation that he's launching. Is it possible?
Thanks!

Anything is possible if you have the correct privileges. But then you probably don't have those privileges, and probably for a reason, as you probably also don't have the DBA role for a reason.
If you are to enable trace in a different session, you would need execute access on an Oracle provided package, which differs by version, and of course you assume Oracle never changes, and there is only one version out there: yours.
For a DBA it would be the easiest to grant you the select_catalog_role and the execute_catalog_role.
But then again one would ask why you think you should spy on him, and why you don't cooperate with him and/or try to convince him.
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How to trace a USER in oracle?

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.

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

How to trace other user's session?

Dear Experts,
I would like to trace other user's session, I am on Oracle 10g R2 (10.2.0.4) on a Windows box. I did search on google and found tons of articles explaining about tracing techniques. But unfortunately, trace file is not getting generated in my case. Below are the steps I am following:
SQL> conn /as sysdba
Connected.
SQL>
SQL> select sid, serial# from v$session where username = 'TEST';
       SID    SERIAL#
        38         17
SQL> show parameter user_d
NAME                                 TYPE        VALUE
user_dump_dest                       string      C:\DB10G\UDUMP
SQL> show parameter timed_s
NAME                                 TYPE        VALUE
timed_statistics                     boolean     TRUE
SQL>Connect a new SQL*Plus session as TEST and then
SQL> show user
USER is "SYS"
SQL>
SQL> select sid, serial# from v$session where username = 'TEST';
       SID    SERIAL#
        19      24465
        38         17
SQL> exec dbms_system.set_ev(38,17, 10046, 12, '');
PL/SQL procedure successfully completed.
SQL> exec dbms_system.set_ev(38,17, 10046, 0, '');
PL/SQL procedure successfully completed.
SQL> grant execute on dbms_system to test;
Grant succeeded.
SQL> exec dbms_system.set_ev(38,17, 10046, 12, '');
PL/SQL procedure successfully completed.in the new session (TEST):
SQL> select * from tab;
TNAME                          TABTYPE CLUSTERID
T                              TABLE
T3                             TABLE
T1                             TABLE
T2                             TABLE
MYEMP                          TABLE
SQL>Yet, no trace file is generated in "C:\db10g\udump" folder.
C:\db10g\udump>dir
Volume in drive C is SYSTEM
Volume Serial Number is AC21-0462
Directory of C:\db10g\udump
12/15/2008 12:36 PM    <DIR>          .
12/15/2008 12:36 PM    <DIR>          ..
               0 File(s)              0 bytes
               2 Dir(s)   9,891,508,224 bytes free
C:\db10g\udump>Your help/advice in this regard will be very helpful.
Regards

You must be using shared server.
You can verify this by referring to the SERVER column of v$session.
In shared server several servers will execute your code, so that's why you don't find a trace file.
The method described in this article should work in your case also:
http://technology.amis.nl/blog/1794/how-to-trace-a-java-application-through-a-connection-pool-using-dbms_monitor-6
Hth
Sybrand Bakker
Senior Oracle DBA

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Hello,
You are right Sybrand, SYSDBA connections are always audited.
My answer was about enabling auditing to any connections, which may give informations about who access to the Database in general. And, this is true, it was not the scope of the OP question.
However, so as to enlarge audit of SYS/SYSDBA/SYSOPER operations, setting the parameter audit_sys_operations=TRUE may be interesting:
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Hi,
How can I trace all user connection in a file ?
I would like to know who connected (user oracle) and when.
Thanks for your help,
gnom92.

You can see the figure how many connection made since the db starts up quering v$sysstat;
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NAME VALUE
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Hi,
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http://help.sap.com/saphelp_nw70/helpdata/en/17/358df9c9fee2469105731e10756921/frameset.htm
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Hi Experts,
Had to ask how to trace a User's System or I.p address whom has performed changes over a BEX Query.
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Hi,
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Edited by: mcharchu on Feb 5, 2009 9:24 PM
Edited by: mcharchu on Feb 5, 2009 9:25 PM

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Maybe this link provides some help?
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soundar wrote:
these details on the audit where it gets recorded..?
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[Initialization Parameters: AUDIT_TRAIL|http://download.oracle.com/docs/cd/A84870_01/doc/server.816/a76961/ch111.htm]

Trace a user

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