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How to Check the Locked Object details

Lock related queries :

SELECT XIDUSN,OBJECT_ID,SESSION_ID,ORACLE_USERNAME,OS_USER_NAME,PROCESS from v$locked_object;


SELECT d.OBJECT_ID, substr(OBJECT_NAME,1,20), l.SESSION_ID, l.ORACLE_USERNAME, l.LOCKED_MODE
from   v$locked_object l, dba_objects d
where  d.OBJECT_ID=l.OBJECT_ID;


SELECT ADDR, KADDR, SID, TYPE, ID1, ID2, LMODE, BLOCK from v$lock;


SELECT a.sid, a.saddr, b.ses_addr, a.username, b.xidusn, b.used_urec, b.used_ublk
FROM   v$session a, v$transaction b
WHERE  a.saddr = b.ses_addr;


SELECT s.sid, l.lmode, l.block, substr(s.username, 1, 10), substr(s.schemaname, 1, 10),
       substr(s.osuser, 1, 10), substr(s.program, 1, 30), s.command
FROM   v$session s, v$lock l
WHERE  s.sid=l.sid;


SELECT  p.spid, s.sid, p.addr,s.paddr,substr(s.username, 1, 10), substr(s.schemaname, 1, 10),
        s.command,substr(s.osuser, 1, 10), substr(s.machine, 1, 10)
FROM    v$session s, v$process p
WHERE   s.paddr=p.addr


SELECT sid, serial#, command,substr(username, 1, 10), osuser, sql_address,LOCKWAIT,
       to_char(logon_time, 'DD-MM-YYYY;HH24:MI'), substr(program, 1, 30)
FROM   v$session;


SELECT sid, serial#,  username, LOCKWAIT from v$session;


SELECT v.SID, v.BLOCK_GETS, v.BLOCK_CHANGES, w.USERNAME, w.OSUSER, w.TERMINAL
FROM   v$sess_io v, V$session w
WHERE  v.SID=w.SID ORDER BY v.SID;


SELECT * from dba_waiters;

SELECT waiting_session, holding_session, lock_type, mode_held
FROM   dba_waiters;


SELECT
  p.spid                      unix_spid,
  s.sid                       sid,
  p.addr,
  s.paddr,
  substr(s.username, 1, 10)   username,
  substr(s.schemaname, 1, 10) schemaname,
  s.command                   command,
  substr(s.osuser, 1, 10)     osuser,
  substr(s.machine, 1, 25)    machine
FROM   v$session s, v$process p
WHERE  s.paddr=p.addr
ORDER BY p.spid;
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