Long operations session killing

Question

hi
i want to remove a particular session which one is running a long query.ie.some user a running a query which one is taking too much time to run.how to kill such session??
regards
Edited by: you on May 19, 2010 6:02 AM

Answer 1

To find SQLs running for more than 5 Seconds:
col username for a30
col machine for a30
select s.sid, a.sql_text, s.username, s.machine
     from v$sqltext a,
     v$session s
     where s.sql_address = a.address
     and s.sid in (select sid
from v$session
where LAST_CALL_ET > 5
and status = 'ACTIVE'
and username = 'USERNAME' )
order by s.sid, a.piece;
check for long operations :
SET LINES 150
COLUMN sid FORMAT 9999
COLUMN serial# FORMAT 9999999
COLUMN username FORMAT A30
COLUMN machine FORMAT A30
COLUMN progress_pct FORMAT 99999999.00
COLUMN elapsed FORMAT A10
COLUMN remaining FORMAT A10
SELECT s.sid,
s.serial#,
s.username,
s.machine,
ROUND(sl.elapsed_seconds/60) || ':' || MOD(sl.elapsed_seconds,60) elapsed,
ROUND(sl.time_remaining/60) || ':' || MOD(sl.time_remaining,60) remaining,
ROUND(sl.sofar/sl.totalwork*100, 2) progress_pct
FROM v$session s,
v$session_longops sl
WHERE s.sid = sl.sid
AND s.serial# = sl.serial#
AND sl.time_remaining > 0;
the below query will tell on which object lock has been acquired , if you know the object name on which long operation is running . then after getting sid you can kill it
select session_id "sid",SERIAL# "Serial",
substr(object_name,1,20) "Object",
substr(os_user_name,1,10) "Terminal",
substr(oracle_username,1,10) "Locker",
nvl(lockwait,'active') "Wait",
decode(locked_mode,
2, 'row share',
3, 'row exclusive',
4, 'share',
5, 'share row exclusive',
6, 'exclusive', 'unknown') "Lockmode",
OBJECT_TYPE "Type"
FROM
SYS.V_$LOCKED_OBJECT A,
SYS.ALL_OBJECTS B,
SYS.V_$SESSION c
WHERE
A.OBJECT_ID = B.OBJECT_ID AND
C.SID = A.SESSION_ID
ORDER BY 1 ASC, 5 Desc
Edited by: PrafullaNath on May 19, 2010 3:15 PM
Edited by: PrafullaNath on May 19, 2010 3:16 PM
Edited by: PrafullaNath on May 19, 2010 3:17 PM