Query To Kill Locked Object's Session

Question

Hi ,
Im trying to write script to getting sid & Serial# for frequently locked objects in my database.
i have tried with 3 ways as following, Pl Guide me for choosing better.
Query 1:
SELECT SID,SERIAL# FROM V$SESSION WHERE SID IN (SELECT SID FROM V$LOCKED_OBJECT WHERE OBJECT_ID IN ('34943','34957','34966')));
Query 2:
select
     sess.sid,
     sess.serial#
from
     v$locked_object lo,
     dba_objects ao,
     v$session sess
where
ao.object_id = lo.object_id
     and
lo.session_id = sess.sid
     AND
AO.OBJECT_ID IN('34943','34957','34966');
Query 3:
select
sid,
serial#
from
select
sid,
serial#
from
v$session
) y,
select
b.session_id
from
select
object_id,
session_id,
locked_mode
from
v$locked_object
) b,
select
object_id,
object_name,
owner
from
dba_objects
where
object_name in ('PMA_DEFECT_DETAILS',
'PMA_DEFECT_HEADER',
'PMA_DEFECT_TRANS')
) c
Where
b.object_id = c.object_id
) x
Where
x.session_id = y.sid ;
Edited by: Abk on Jan 2, 2009 6:31 PM
Edited by: Abk on Jan 2, 2009 6:34 PM

Answer 1

Hi..
To know the lock you can use the query below, you will know the sid and find the serial# from v$session.
>
col sid for 9999
col id1 for 99999999
col id2 for 99999999
col lmode head "Lock Held" form a14
col request1 head "Lock Request" form a16
col type head "Lock Type" form a40
col ctime head "Time Held" form 99999
select sid,
DECODE(TYPE,
'BL','Buffer hash table',
'CF','Control File Transaction',
'CI','Cross Instance Call',
'CS','Control File Schema',
'CU','Bind Enqueue',
'DF','Data File',
'DL','Direct-loader index-creation',
'DM','Mount/startup db primary/secondary instance',
'DR','Distributed Recovery Process',
'DX','Distributed Transaction Entry',
'FI','SGA Open-File Information',
'FS','File Set',
'IN','Instance Number',
'IR','Instance Recovery Serialization',
'IS','Instance State',
'IV','Library Cache InValidation',
'JQ','Job Queue',
'KK','Redo Log "Kick"',
'LS','Log Start/Log Switch',
'MB','Master Buffer hash table',
'MM','Mount Definition',
'MR','Media Recovery',
'PF','Password File',
'PI','Parallel Slaves',
'PR','Process Startup',
'PS','Parallel Slaves Synchronization',
'RE','USE_ROW_ENQUEUE Enforcement',
'RT','Redo Thread',
'RW','Row Wait',
'SC','System Commit Number',
'SH','System Commit Number HWM',
'SM','SMON',
'SQ','Sequence Number',
'SR','Synchronized Replication',
'SS','Sort Segment',
'ST','Space Transaction',
'SV','Sequence Number Value',
'TA','Transaction Recovery',
'TD','DDL enqueue',
'TE','Extend-segment enqueue',
'TM','DML enqueue',
'TS','Temporary Segment',
'TT','Temporary Table',
'TX','Transaction',
'UL','User-defined Lock',
'UN','User Name',
'US','Undo Segment Serialization',
'WL','Being-written redo log instance',
'WS','Write-atomic-log-switch global enqueue',
'XA','Instance Attribute',
'XI','Instance Registration',
decode(substr(TYPE,1,1),
'L','Library Cache ('||substr(TYPE,2,1)||')',
'N','Library Cache Pin ('||substr(TYPE,2,1)||')',
'Q','Row Cache ('||substr(TYPE,2,1)||')',
'????')) TYPE,
id1,id2,
decode(lmode,
0,'None(0)',
1,'Null(1)',
2,'Row Share(2)',
3,'Row Exclu(3)',
4,'Share(4)',
5,'Share Row Ex(5)',
6,'Exclusive(6)') lmode,
decode(request,
0,'None(0)',
1,'Null(1)',
2,'Row Share(2)',
3,'Row Exclu(3)',
4,'Share(4)',
5,'Share Row Ex(5)',
6,'Exclusive(6)') request1,
ctime, decode(BLOCK,
          0, 'Not Blocking',
          1, 'Blocking',
          2, 'Global',block) status
from
v$lock
where sid>5
and type not in ('MR','RT')
order by decode(request,0,0,2),block,5
==================================================
To know the session:--
col username for a20
col program for a20
col osuser for a15
SELECT NVL(s.username, '(oracle)') AS username,
s.osuser,
s.sid,
s.serial#,
p.spid,
s.status,
s.module,
s.machine,
s.program,
TO_CHAR(s.logon_Time,'DD-MON-YYYY HH24:MI:SS') AS logon_time
FROM v$session s,
v$process p
WHERE s.paddr = p.addr
ORDER BY s.username, s.osuser;
>
HTH
Anand