select * from  v$locked_object
select * from v$lock
select t2.username,t2.sid,t2.serial#,t2.logon_time
??from v$locked_object t1,v$session t2
??where t1.session_id=t2.sid order by t2.logon_time;
select * from v$session

select sess.sid,
    sess.serial#,
    lo.oracle_username,
    lo.os_user_name,
    ao.object_name,
    lo.locked_mode
    from v$locked_object lo,
    dba_objects ao,
    v$session sess
where ao.object_id = lo.object_id and lo.session_id = sess.sid;

select 'alter system kill session '''||sid||','||serial#||''';' from v$session where sid in (select sid from v$lock where block = 1);

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