等待资源时检测到死锁

1.查看那些表被锁住：

SQL> 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;

2.查看引起死锁的会话：

SQL> select b.username,b.sid,b.serial#,logon_time from v$locke{d}_{o}bjecta,v$session b where a.session_id = b.sid order by b.logon_time;

3.查看被阻塞的会话：

select * from dba_waiters;

4.可以提交或回滚阻塞的话，释放锁或者杀掉ORACLE进程：

alter system kill sessin ‘sid,serial#’;

sid值和seial#值依情况而定。