List Users Logged On

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COL orauser HEA "   Oracle User   " FOR a17 TRUNC
COL osuser HEA " O/S User " FOR a10 TRUNC
COL ssid HEA "Sid" FOR a4
COL sserial HEA "Serial#" FOR a7
COL ospid HEA "O/S Pid" FOR a7
COL slogon HEA "  Logon Time  " FOR a14
COL sstat HEA "Status" FOR a6
COL auth HEA "Auth" FOR a4
COL conn HEA "Con" FOR a3

SELECT
   ' '||NVL( s.username, '    ????    ' ) orauser,
   ' '||s.osuser osuser,
   LPAD( s.sid, 4 ) ssid, LPAD( s.serial#, 6 ) sserial,
   LPAD( p.spid, 6 ) ospid,
   INITCAP( LOWER( TO_CHAR( logon_time, 'MONDD HH24:MI:SS' ) ) ) slogon,
   DECODE( s.status, 'ACTIVE', ' Busy ', 'INACTIVE', ' Idle ', 'KILLED', ' Kill ', '  ??  ' ) sstat,
   DECODE( sc.authentication_type, 'DATABASE', ' DB ', 'OS', ' OS ', ' ?? ' ) auth,
   DECODE( s.server, 'DEDICATED', 'Dir', 'NONE', 'Mts', 'SHARED', 'Mts', '???' ) conn
FROM
   v$session s, v$process p,
   (
   SELECT
      DISTINCT sid, authentication_type
   FROM
      v$session_connect_info
   ) sc
WHERE
   s.paddr = p.addr AND s.sid = sc.sid
ORDER BY
   s.status,s.sid
/

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