user097815 Posts: 963 Registered: 04/09/08 Re: DBA commit other session's transaction? Posted: 2009-1-27 上午11:43 in response to: alexlizn Helpful Reply
From what i know, its not possible. As a dba can monitor a session, but cant commit the changes. It only the user who open the session can commit that changes. Again its just my thinking. But there are experts here and ppl on here with lots and lots of knowledge can answer ur question. But from what i know its not possible.
那数据要不提交要不就撤销,怎么会还存在?
session已经销毁，数据还在？在哪个地方？如果数据“还在”，是否意味着已经提交了。
这说法有些自相矛盾了，或者我理解错了。
如果说表空间出现增长，是否是因为 缓冲区可能是 因为大量数据 未作COMMIT ，DBWR 在一些特定状态下
1. ckpt : checkpoint
2. db cache 空间不够
3. time out 3秒
4. alter tablespace ** offline;
5. drop table ***;
6. truncate table
已经将一部分未提交数据写入磁盘，该部分数据 会有状态位 是未提交。
可能（需要高手指明） 是否高水位会增高 即便是 ROLLBACK 之后。
-- 没有这一说法!-- 要是有这一说法的话，那就没有session这一说法啦!
-- 任何会话都是独立存在的，相互没有任何关系!-- 就算你执行commit操作也只能在某一个会话中commit，不会影响其他会话中未提交的数据变为已提交!
-- 这也是为了保证数据的完整性!
A quick question, can a DBA commit other session's transaction?If so, how?
Thanks!
Alex
user097815
Posts: 963
Registered: 04/09/08
Re: DBA commit other session's transaction?
Posted: 2009-1-27 上午11:43 in response to: alexlizn Helpful
Reply
From what i know, its not possible. As a dba can monitor a session, but cant commit the changes. It only the user who open the session can commit that changes. Again its just my thinking. But there are experts here and ppl on here with lots and lots of knowledge can answer ur question. But from what i know its not possible.