1 查出被锁的表信息 select /* rule*/ a.sid, b.owner, object_name, object_type from v$lock a, all_objects b where type = 'tm' and a.id1 = b.object_id; --1.查出锁定object的session的信息以及被锁定的object名 select l.session_id sid, s.serial#,
1 查出被锁的表信息
select /*+ rule*/
a.sid, b.owner, object_name, object_type
from v$lock a, all_objects b
where type = 'tm'
and a.id1 = b.object_id;
--1.查出锁定object的session的信息以及被锁定的object名
select l.session_id sid, s.serial#, l.locked_mode,l.oracle_username,
l.os_user_name,s.machine, s.terminal, o.object_name, s.logon_time
from v$locked_object l, all_objects o, v$session s
where l.object_id = o.object_id
and l.session_id = s.sid
order by sid, s.serial# ;
--2.查出锁定表的session的sid, serial#,os_user_name, machine name, terminal和执行的语句
--比上面那段多出sql_text和action
select l.session_id sid, s.serial#, l.locked_mode, l.oracle_username, s.user#,
l.os_user_name,s.machine, s.terminal,a.sql_text, a.action
from v$sqlarea a,v$session s, v$locked_object l
where l.session_id = s.sid
and s.prev_sql_addr = a.address
order by sid, s.serial#;
--3.查出锁定表的sid, serial#,os_user_name, machine_name, terminal，锁的type,mode
select s.sid, s.serial#, s.username, s.schemaname, s.osuser, s.process, s.machine,
s.terminal, s.logon_time, l.type
from v$session s, v$lock l
where s.sid = l.sid
and s.username is not null
order by sid;
2 查出serial
select sid,serial# from v$session where sid = 662;
3 杀掉session
alter system kill session '662,44825';
select 'alter system kill session '''||sid||','||serial#||''';' from v$session where username='dcdb';
4 查出是否有长时间执行的sql
select a.sid, b.sql_text
from v$session a, v$sqlarea b
where a.sql_hash_value = b.hash_value
and a.sid in
(select sid from gv$session_longops where time_remaining > 0);