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Oracle Concepts - Query for active users with v$session

Oracle Tips by Burleson Consulting

See what SQL users are running on the system

Once we figure out who is on the system, we will probably want to know what they are doing. In this case, we will join the v$session view we just queried with another view, the V$SQL view. The V$SQL view will provide us with the SQL that is being executed on our system. Let?s see GRUMPY?s session details:

SQL> select a.sid, a.serial#, b.sql_text
  2  from v$session a, v$sqlarea b
  3  where a.sql_address=b.address
  4  and a.username='GRUMPY';
---------- ---------- ----------------------------------------------
       122      61521 select count(*) from gen_person where gen_person_id=95000
select sesion.sid,
  from v$sqlarea sqlarea, v$session sesion
 where sesion.sql_hash_value = sqlarea.hash_value
   and sesion.sql_address    = sqlarea.address
   and sesion.username is not null

For complete scripts for detecting blocking session, see the Oracle script collection.




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