oracle查看表锁及解锁

--kill session语句

1	alter system kill SESSION '2171,60490';

--以下几个为相关表

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SELECT * FROM v$lock; SELECT * FROM v$sqlarea; SELECT * FROM v$session; SELECT * FROM v$process ; SELECT * FROM v$locked_object; SELECT * FROM all_objects; SELECT * FROM v$session_wait;

--1.查出锁定object的session的信息以及被锁定的object名

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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

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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

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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;

--4.查看链接数

1	select count(*) from v$session;

来自为知笔记(Wiz)