我們常常在操作數據庫時會遇到某個DML操作可能等待很久沒有反應,遇到這種情況多半是因爲表被鎖住了,那麼如何解鎖呢?
查看哪個表被鎖:
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;
查看是哪個session引起的,
/*查看鎖表進程SQL語句2: */
select * from v$session t1, v$locked_object t2 where t1.sid = t2.SESSION_ID; /*殺掉鎖表進程:
如有記錄則表示有lock,記錄下SID和serial# ,將記錄的ID替換下面的738,1429,即可解除LOCK */
alter system kill session '738,1429';