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查看11 | 回复7 | 2005-10-30 17:05:33 | 显示全部楼层 |阅读模式
You want to determine if any of your data files are OMFs.
Which two methods could you use to determine you have any OMFs? (Choose two.)
A. Review the alert log for the instance.
B. Query the FILE_ID column of the DBA_DATA_FILES static view.
C. Query the FILE_NAME column of the DBA_DATA_FILES static view.
D. Review the INIT.ORA or SPFILE used to start the instance to see if the
DB_CREATE_FILE_DEST parameter is set.
E. Review the INIT.ORA file or SPFILE used to start the instance to see if the
DB_CREATE_FILE_DEST parameter and the DB_CREATE_ONLINE_LOG_DEST_n
parameter are set.
F. Review the INIT.ORA file or SPFILE used to start the instance to determine the data file
location for OMFs. Then, review these locations looking for data files whose name matches
the standard for OMFs.
答案是 AD
可是我覺得是AE , 各位認為呢。?
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千问 | 2005-10-30 17:05:33 | 显示全部楼层
both D and E are correct in a sense.according to ILT, they are two different ways of allocating OMF's.
i want to say the answer is A and C, according to ILT 13-7.
btw, where do you see this question?
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千问 | 2005-10-30 17:05:33 | 显示全部楼层
The answers are A, C

D and E are not correct, because you can not read SPFILE.
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千问 | 2005-10-30 17:05:33 | 显示全部楼层
well, technically you can still "review" spfile by quering v$spparameter view, e.g.
select * from v$spparameter where name like 'db_create%';
but i agree AC are more likely to be correct.
it seems to me now questions are in 9i can be very tricky


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千问 | 2005-10-30 17:05:33 | 显示全部楼层
最初由 oramind 发布
[B]well, technically you can still "review" spfile by quering v$spparameter view, e.g.
select * from v$spparameter where name like 'db_create%';
[/B]

没想到这一点,谢谢 oramind提醒!


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千问 | 2005-10-30 17:05:33 | 显示全部楼层
最初由 oramind 发布
[B]well, technically you can still "review" spfile by quering v$spparameter view, e.g.
select * from v$spparameter where name like 'db_create%';
but i agree AC are more likely to be correct.
it seems to me now questions are in 9i can be very tricky

[/B]


所以使用show parameter db_create是可以看到這個paramter 的
,那可以請問一下,為什麼是C呢?
在spfile裡面要設定的不是DB_CREATE_FILE_DEST ,DB_CREATE_LOG_FILE_DEST
這兩個參數嗎?如果有設定的話,不就是使用了OMF了嗎?
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千问 | 2005-10-30 17:05:33 | 显示全部楼层
題目問的是要確定哪些文件是omf,看init.ora, spfile.ora可以看到一部分的omf,但並不能保證看到全部。例如db_create_file_dest或db_create_online_lig_dest_n曾經變動過了。
ac是正確的。這裡有個前提,non-omf不可以用類似omf的命名方式來命名,否則就會混淆。
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千问 | 2005-10-30 17:05:33 | 显示全部楼层
用筛选法来选择,AC最可信
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