SQL Script Monitor All Database Locks

Updated : 3-November-1998
Version : 1.0

Description

This script lists details of all current database locks on the system, who is holding the lock, and the object name where the lock is held.

Parameters

None.

SQL Source

set pages 20
col username form A10
col sid form 9990
col type form A4
col lmode form 990
col request form 990
col objname form A15 Heading "Object Name"
rem Display the object id's if the object_name is not unique
rem col id1 form 999999900   
rem col id2 form 999999900

spool check_lock.lis

SELECT sn.username, m.sid, m.type,
   DECODE(m.lmode, 0, 'None'
                 , 1, 'Null'
                 , 2, 'Row Share'
                 , 3, 'Row Excl.'
                 , 4, 'Share'
                 , 5, 'S/Row Excl.'
                 , 6, 'Exclusive'
                 , lmode, ltrim(to_char(lmode,'990'))) lmode,
   DECODE(m.request, 0, 'None'
                 , 1, 'Null'
                 , 2, 'Row Share'
                 , 3, 'Row Excl.'
                 , 4, 'Share'
                 , 5, 'S/Row Excl.'
                 , 6, 'Exclusive'
                 , request, ltrim(to_char(request,'990'))) request,
         obj1.object_name objname, obj2.object_name objname
FROM v$session sn, V$lock m, dba_objects obj1, dba_objects obj2
WHERE sn.sid = m.sid
AND m.id1 = obj1.object_id (+)
AND m.id2 = obj2.object_id (+)
     AND lmode != 4 
ORDER BY id1,id2, m.request
/

spool off
clear breaks

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