sql死锁

--查询锁表信息，可以查看是谁锁了表，然后找他释放

select sess.sid,

sess.serial#,

lo.oracle_username,

lo.os_user_name,

ao.object_name,

lo.locked_mode

from v$locked_object lo,

dba_objects ao,

v$session sess

where ao.object_id = lo.object_id and lo.session_id = sess.sid;

--如果死锁了，可以根据sessionID来杀死锁表进程，sessionID是上一个sql查出来的（v$session.sid+','+v$session.SERIAL#）

alter system kill session '510,9398';