oracle for update锁表资源释放之kill -9和alter system kill session 'sid,serial#';
通过for update锁表,通过操作系统方式和oracle方式终止进程方式
--查询需要终止进程的情况,包括操作系统进程
select proc.sPID,
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,v$process proc
where ao.object_id = lo.object_id
and lo.session_id = sess.sid
and sess.PADDR=proc.ADDR;
--通过操作系统方式终止进程
kill -9 spid
--通过oracle方式终止进程
alter system kill session 'sid,serial#';
--增加查询锁表sql字段,需sql进程是ACTIVE状态才能查询到
select sqlt.sql_text,
proc.sPID,
sess.sid,
sess.serial#,
lo.oracle_username,
lo.os_user_name,
ao.object_name,
lo.locked_mode
from v$locked_object lo,
dba_objects ao,
v$session sess,
v$process proc,
v$sqltext sqlt
where ao.object_id = lo.object_id
and lo.session_id = sess.sid
and sess.PADDR = proc.ADDR
and sqlt.address = sess.sql_address;
通过测试用for update锁表,在操作系统kill -9杀掉要等40秒后才能再锁,在数据库用alter system kill session 'sid,serial#';杀掉,2秒后就可以再次锁
正常情况都是推荐用alter system kill session 'sid,serial#';来杀进程,不建议用kill -9