Active Users Session Query before taking Oracle Down

https://dbissues.blogspot.com/2017/11/active-user-sessions-query-before-going.html

SELECT DISTINCT icx.session_id,
                  icx.user_id,
                  fu.user_name,
                  fu.description
    FROM icx_sessions icx, fnd_user fu
   WHERE     disabled_flag != 'Y'
         AND icx.pseudo_flag = 'N'
         AND (last_connect +
              DECODE (fnd_profile.VALUE ('ICX_SESSION_TIMEOUT'),
                      NULL, limit_time,
                      0   , limit_time,
                      fnd_profile.VALUE ('ICX_SESSION_TIMEOUT')/60) / 24) > SYSDATE
         AND icx.counter < limit_connects
         AND icx.user_id = fu.user_id;