To can find lock object

Question

Hi friend;
I have one issue. I have scheduled procedure and it runs like 5 min.Let us say it start 10.00 pm Somehow yesterday couse of lock of table cause of to wait to compliate this procedure like 4 hours,thatswhy all other schedule delay.My procedure complate like 02.00 am then other process started to run.
I used AWR also try to query DBA_HIST_ACTIVE_SESS_HISTORY but cant find what,why,who locked table on time 10.00pm which cause and pretend to run my procedure
Is there any way to identify this why i have this lock?(Already check trc,alert log file but no luck to find any clue)
Regards
Helios

Answer 1

-- show lock related information
select     OS_USER_NAME os_user,
     PROCESS os_pid,
     ORACLE_USERNAME oracle_user,
     l.SID oracle_id,
     decode(TYPE,
          'MR', 'Media Recovery',
          'RT', 'Redo Thread',
          'UN', 'User Name',
          'TX', 'Transaction',
          'TM', 'DML',
          'UL', 'PL/SQL User Lock',
          'DX', 'Distributed Xaction',
          'CF', 'Control File',
          'IS', 'Instance State',
          'FS', 'File Set',
          'IR', 'Instance Recovery',
          'ST', 'Disk Space Transaction',
          'TS', 'Temp Segment',
          'IV', 'Library Cache Invalidation',
          'LS', 'Log Start or Switch',
          'RW', 'Row Wait',
          'SQ', 'Sequence Number',
          'TE', 'Extend Table',
          'TT', 'Temp Table', type) lock_type,
     decode(LMODE,
          0, 'None',
          1, 'Null',
          2, 'Row-S (SS)',
          3, 'Row-X (SX)',
          4, 'Share',
          5, 'S/Row-X (SSX)',
          6, 'Exclusive', lmode) lock_held,
     decode(REQUEST,
          0, 'None',
          1, 'Null',
          2, 'Row-S (SS)',
          3, 'Row-X (SX)',
          4, 'Share',
          5, 'S/Row-X (SSX)',
          6, 'Exclusive', request) lock_requested,
     decode(BLOCK,
          0, 'Not Blocking',
          1, 'Blocking',
          2, 'Global', block) status,
     OWNER,
     OBJECT_NAME
from     v$locked_object lo,
     dba_objects do,
     v$lock l
where      lo.OBJECT_ID = do.OBJECT_ID
AND l.SID = lo.SESSION_ID;
Regards
Asif Kabir