单项选择题X 纠错

In your database， all the tablespaces are locally managed. You started Recovery Manager （RMAN） using recovery catalog. The following commands are used in the process of recovering the database by using the backup control file： 
In what sequence would you use this process to perform the recovery？（）

A.7， 2， 3， 1， 4， 6， 5
B.7， 1， 3， 2， 6， 5， 4
C.2， 1， 7， 6， 3， 5， 4
D.2， 7， 3， 5， 1， 6， 4

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The loss of the control file forced you to re­create the control file. After re­creating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five­digit number starting with 0. 
What could be the possible reason？（）

A.These are the data files that are corrupted.
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C.There is a read­only tablespace in your database.
D.These are the data files that cannot be recovered.

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单项选择题

You have a read­only tablespace on read­only media. You want to perform a media recovery on the existing data files， but using a backup control file. The backup control file indicates that the status of the read­only tablespace was read/write when the control file was backed up. What should you consider？（）

A.drop the read­only tablespace and re­create the tablespace after recovery
B.take data files from the read­only tablespace offline before performing a recovery
C.perform a recovery; status of the tablespace in control file will be changed automatically
D.recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database

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单项选择题

One of the tablespaces is read­only in your database. The loss of all control files forced you to re­create the control file. 
Which operation do you need to perform after re­creating the control file and opening the database？（）

A.drop and re­create the read­only tablespaces
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C.change the tablespace status from read/write to read­only
D.re­create the read­only tablespace because it is automatically removed

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单项选择题

You lost the PRODSTD tablespace， which was read/write. The tablespace was read­only when the last backup was performed. How would you recover the tablespace？（）

A.restore the tablespace from the backup; there is no need to apply the redo information 
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多项选择题

You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re­create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re­create the indexes？（）

A.ONLINE
B.REVERSE
C.PARALLEL
D.COMPRESS
E.NOLOGGING
F.COMPUTE STATISTICS

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