查看Oracle中是否有锁表的sql

小蚂蚁

1、查看是否有锁表的sql

select 'blocker('||lb.sid||':'||sb.username||')-sql:'|| qb.sql_text blockers, 
'waiter ('||lw.sid||':'||sw.username||')-sql:'|| qw.sql_text waiters 
from v$lock lb, 
v$lock lw, 
v$session sb, 
v$session sw, 
v$sql qb, 
v$sql qw 
where lb.sid=sb.sid 
and lw.sid=sw.sid 
and sb.prev_sql_addr=qb.address 
and sw.sql_address=qw.address 
and lb.id1=lw.id1 
and sw.lockwait is not null 
and sb.lockwait is null 
and lb.block=1 ;

2、查看被锁的表

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 and c.object_id=b.object_id ;

3、查看那个用户那个进程造成死锁，锁的级别

select b.owner,b.object_name,l.session_id,l.locked_mode fromv$locked_object l, dba_objects

4、查看连接的进程

SELECT sid, serial#, username, osuser FROMv$session;

5、查看是哪个session引起的

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;

6、杀掉进程

alter system kill session 'sid,serial#';

sid是第5步查询出的sid和serid