--以下幾個(gè)為相關(guān)表
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;
--查看被鎖的表
select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id;
--查看那個(gè)用戶那個(gè)進(jìn)程照成死鎖
select b.username,b.sid,b.serial#,logon_time from v$locked_object a,v$session b where a.session_id = b.sid order by b.logon_time;
--查看連接的進(jìn)程
SELECT sid, serial#, username, osuser FROM v$session;
--3.查出鎖定表的sid, serial#,os_user_name, machine_name, terminal,鎖的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;
這個(gè)語句將查找到數(shù)據(jù)庫中所有的DML語句產(chǎn)生的鎖,還可以發(fā)現(xiàn),
任何DML語句其實(shí)產(chǎn)生了兩個(gè)鎖,一個(gè)是表鎖,一個(gè)是行鎖。
--殺掉進(jìn)程 sid,serial#
alter system kill session '210,11562'; 此處不能連接起來 要有空格,不然會(huì)報(bào)錯(cuò)的例如(alter system kill session'210,11562'; )。
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