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orAClE如何解锁表

解锁代码: alter system kill session 'sid, serial#'; ALTER system kill session '23, 1647'; 1、下面的语句用来查询哪些对象被锁: select object_name,machine,s.sid,s.serial# from v$locked_object l,dba_objects o ,v$session s where l...

查看哪个表被锁 select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id 查看是哪个session引起的 select b.username,b.sid,b.serial#,logon_time from v$locked_obje...

用如下语句查询锁死的表: select p.spid, a.serial#, c.object_name, b.session_id, b.oracle_username, b.os_user_name from v$process p, v$session a, v$locked_object b, all_objects c where p.addr = a.paddr and a.process = b.process ...

DML锁又可以分为,行锁、表锁、死锁 -行锁:当事务执行数据库插入、更新、删除操作时,该事务自动获得操作表中操作行的排它锁。 -表级锁:当事务获得行锁后,此事务也将自动获得该行的表锁(共享锁),以防止其它事务进行DDL语句影响记录行的更新。...

--锁定对象锁表查询select s.SID,s.SERIAL#,o.object_name, s.USERNAME, s.MACHINE, s.BLOCKING_SESSION, s.SQL_ID, lo.*from V$LOCKED_OBJECT lo, DBA_OBJECTS o, V$SESSION Swhere lo.object_id=o.object_id AND lo.SESSION_ID=s.SID(+);

--查看被锁的表 select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id; --查看那个用户那个进程照成死锁 select b.username,b.sid,b.serial#,logon_time from v$loc...

查看哪个表被锁 select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id 查看是哪个session引起的 select b.username,b.sid,b.serial#,logon_time from v$locked_obje...

若多人同时对一条记录进行操作则会引起死锁 select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id select b.username,b.sid,b.serial# from v$locked_object a,v$se...

这个是无法实现的。 解释:既然已经锁定,说明commit和rollback都已经失效,此情况下只能是通过以下方式来进行“解锁” 1.下面的语句用来查询哪些对象被锁: select object_name,machine,s.sid,s.serial# from v$locked_object l,dba_objects o ,v...

第一种: SQL>select session_id from v$locked_object; 49 SQL>SELECT sid, serial#, username FROM v$session where sid = 49; 49 554 system SQL>ALTER SYSTEM KILL SESSION '49, 554'; 第二种: 如果用的是客户端登录,直接关掉客户端就可以...

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