如何查看Oracle中的某表被鎖定，以及如何解鎖

查出所有被鎖住的表
select b.owner TABLEOWNER, b.object_name TABLENAME, c.OSUSER LOCKBY,

c.USERNAME LOGINID, c.sid SID, c.SERIAL# SERIAL
from v$locked_object a,dba_objects b, v$session c 
where b.object_id = a.object_id AND a.SESSION_ID =c.sid;

通過SID, SERIAL解鎖 
alter system kill session 'SID, SERIAL';