oracle被锁常用查询语句

1.查询被锁的对象:

select * from v$locked_object

字段:

object_id:数据表id

session_id:会话id

oracle_username:用户名

os_user_name:客户端计算机名

locked_mode:锁模式

2.查询被锁的表

select 
a.session_id,
b.*

from v$locked_object a,dba_objects b

where b.object_id = a.object_id

字段:

session_id:会话id

owner:表的拥有者

object_name:表名

3.查询被锁对象的session

select 
l.session_id,
l.object_id,
s.*

from v$locked_object l,v$session s

where l.session_id = s.sid

字段:

session_id:会话id

serial#:会话序列

object_id:数据表id

username:用户名

schemaname:用户名

osuser:操作客户端用户名

status:ACTIVE-已激活状态,INACTIVE-末激活状态,被阻塞状态

machine:客户端计算机名

program:客户程序

sql_hash_value:sql的哈希值

sql_id:sql的id

4.查询引起死锁的sql

select 
l.session_id,
l.object_id,
q.*

from v$locked_object l,v$session s,v$sql q

where l.session_id = s.sid

and s.sql_id=q.sql_id

字段:

sql_text:sql语句

5.查询阻塞的会话id

select * from dba_waiters;

字段:

waiting_session:等待会话id

holding_session:阻塞会话id

6.杀掉死锁会话

alter system kill session 'session_id,serial#';