Today, the development of feedback that the implementation of a program update when hang lived, looked at what is a small table, just over 3000 lines of data. The first reaction is a lock, to all the session kill of this example, performed live update or hang separately select quickly performed under conditions where the latter. So I think it should be there on the 2-node lock, then execute the query:
select * from gv$lock where id1=383105;
SQL> select * from gv$lock where id1=383105;
INST_ID ADDR KADDR SID TYPE ID1 ID2 LMODE REQUEST CTIME BLOCK
-------------- -------- ---------- --------- -------- --------- --------- ---------- -------------- ---------- ----------
2 0000000110AF61B0 0000000110AF6210 1333 TM 383105 0 3 0 6819 2
Sure enough, there is a session on node 2 holds lock.
2 is connected to the node, execute the query:
SQL> select sid,serial#,osuser from v$session where sid=1333;
SID SERIAL# OSUSER
--------- -------------- ------------------------------
1333 22559 6005821
alter system kill session '1333,22559';
After killing the session, then check and found that there are 1333 session:
SQL> select sid,serial#,osuser from v$session where sid=1333;
SID SERIAL# OSUSER
--------- -------------- ------------------------------
1333 22559 6005821
So I think from the system level kill, but not the query spid 1333 through the following sql
select p.pid,p.spid,s.sid,s.serial# from v$process p,v$session s where s.paddr=p.addr and s.sid=1333;
查询后发现， 当在Oracle中kill session以后, Oracle只是简单的把相关session的paddr 指向同一个虚拟地址.此时v$process和v$session失去关联,进程就此中断。 然后Oracle就等待PMON去清除这些Session.所以通常等待一个被标记为Killed的Session退出需要花费很长的时间. 如果此时被Kill的process，重新尝试执行任务，那么马上会收到进程中断的提示，process退出，此时Oracle会立即启动PMON 来清除该session.这被作为一次异常中断处理.
根据以下sql找到之前的paddr：
select p.addr from v$process p where pid <> 1
minus
select s.paddr from v$session s;
07000107C8C050F8
07000107DCC19D88
根据v$process的addr找到spid：
select * from v$process where addr in ('07000107C8C050F8','07000107DCC19D88');
然后找到系统进程号，杀掉就好了。由于部分过程没有保留下执行结果，就只有记录下sql了。
oracle@cq2:] ps -ef|grep 8847870
oracle 8847870 1 3 Aug 06 - 734:23 ora_pz99_CQRPT2
oracle 10420652 13107576 0 11:11:01 pts/1 0:00 grep 8847870
[oracle@cq2:] ps -ef|grep 14221746
oracle 12583324 13107576 0 11:11:22 pts/1 0:00 grep 14221746
oracle 14221746 1 0 08:16:07 - 0:04 oracleCQRPT2 (LOCAL=NO)
[oracle@cq2:] kill -9 14221746
[oracle@cq2:] ps -ef|grep 14221746
oracle 12583046 13107576 0 11:12:11 pts/1 0:00 grep 14221746
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