20210301ORACLE查询慢锁处理

1锁表查询的代码有以下的形式：
select count(*) from v$locked_object;
select * from v$locked_object;

2.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;

3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; 

4.查看是哪个sql引起的
select b.username,b.sid,b.serial#,c.* from v$locked_object a,v$session b,v$sql c where a.session_id = b.sid
and b.SQL_ID = c.sql_id and c.sql_id = ''
order by b.logon_time; 

5.杀掉对应进程
执行命令：alter system kill session'1025,41';
其中1025为sid,41为serial#.