You can have your DBA run a SQL against the master qc database/schema (qcsiteadmin_db)to get the information.

SELECT
U.USER_NAME,
PROJECT_NAME,
START_TIME,
END_TIME,
U.USER_NAME as ''Logins''
FROM
td.SESSIONS_HISTORY H,
td.USERS U
WHERE U.USER_NAME = H.USER_NAME
AND U.USER_NAME <> '_SYSTEM_USER_'
ORDER BY PROJECT_NAME, USER_NAME, START_TIME

![alt text][1]

[1]: /upfiles/SQL_Results.jpg

Try this also under the SESSIONS_HISTORY table which contains:

Session ID
Start_Time
End_Time
Domain_Name
Project Name
User_Name
Client_Type