Oracle阻塞会话查询

select INST_ID, SID, TYPE, ID1, ID2, LMODE, REQUEST, CTIME, BLOCK,
DECODE (BLOCK, 0, '', 'blocker') blocker,
DECODE (request, 0, '', 'waiter') waiter
from gv$lock where (ID1,ID2,TYPE) in
(select ID1,ID2,TYPE from gv$lock where request>0)
order by blocker;
执行结果示例如下：
INST_ID     SID TYPE        ID1        ID2 LMODE REQUEST      CTIME BLOCK BLOCKER        WAITER
------- ------- ---- ---------- ---------- ----- ------- ---------- ----- -------------- ------------
   1      70 TX        65539    2630730     6       0       2520     1 blocker
   1      86 TX        65539    2630730     0       4       1654     0                waiter

稍等一会输入/、回车，再次执行上面的SQL，如阻塞情况不变，则确认SID =70的会话是阻塞会话

如果结果显示no rows selected，则表示正常