oracle常忘语句

select * from user_objects ubs where ubs.OBJECT_TYPE='SEQUENCE'; 

查询库中所有sequence

 

1.查询库中被锁表

SELECT object_name, machine, s.sid, s.serial# 
FROM gv$locked_object l, dba_objects o, gv$session s 
WHERE l.object_id　= o.object_id 
AND l.session_id = s.sid; 

2.解锁

alter system kill session 'sid, serial#'; 

......学习锁的原理！！！

 

3.查询表及注释语句

select lower(t.table_name),t.comments from user_tab_comments t