Display Active users and there username

Question

Hi im really stuck im trying to build a small chat
application for my website but iv come across somthing which has
really stumped me i need to be able to display how many active
users are currently in each chatroom but also there usernames any
advice would be good as im pulling my hair out

Answer 1

The following query finds all the responsibilities that are assigned to a user. This query can be useful if you want to know if a user has a particular responsibility or any responsibility that has been end dated. However, if you just want to see the current "Active" responsibilities of the user, uncomment the "FURG.END_DATE" condition (very bottom line of the query).
In the following example, I used "AMOHSIN" as my user name to list all my responsibilities.
-- Query to find all responsibilities of a user
SELECT fu.user_name                "User Name",
frt.responsibility_name "Responsibility Name",
       furg.start_date             "Start Date",
       furg.end_date               "End Date",      
       fr.responsibility_key       "Responsibility Key",
fa.application_short_name "Application Short Name"
FROM fnd_user_resp_groups_direct        furg,
       applsys.fnd_user                   fu,
applsys.fnd_responsibility_tl frt,
applsys.fnd_responsibility fr,
       applsys.fnd_application_tl         fat,
applsys.fnd_application fa
WHERE furg.user_id             = fu.user_id
AND furg.responsibility_id   =  frt.responsibility_id
AND fr.responsibility_id     =  frt.responsibility_id
AND fa.application_id        = fat.application_id
AND fr.application_id        =  fat.application_id
AND frt.language             =  USERENV('LANG')
AND UPPER(fu.user_name)      =  UPPER('AMOHSIN')  -- <change it>
-- AND (furg.end_date IS NULL OR furg.end_date >= TRUNC(SYSDATE))
  ORDER BY frt.responsibility_name;
source:- Oracle Apps R12 Help: Query to find all responsibilities of a user
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