单选题You have lost datafile 4 from your database. Which is typically the fastest way to restore your database？（）ARestore and recover the datafile.BRestore and recover the tablespace.CRestore and recover the database.DRestore and recover the control file.ERe

第1题：

It is not until you have lost your health（）you know its value.

• A、until
• B、when
• C、what
• D、that

第2题：

Redo log files are multiplexed in your database. The disk in which you have one of the redo log members is highly fragmented. In the process of defragmentation you lose the redo log member， which is not a member of the current group. How would you recover from the loss of the redo log member？（）

• A、SMON would automatically restore the lost file.
• B、You would need to restore the whole database from the last backup.
• C、You would need to restore the file from the last full database backup.
• D、You would need to use flashback technology to restore the lost redo log member.
• E、You would need to use Recovery Manager （RMAN） to restore the lost redo log member.
• F、You would need to restore the missing log file by copying one of the remaining files from the same group.

第3题：

第4题：

Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you. Which two statements are true in this scenario？（）

• A、The instance aborts.
• B、The database cannot be recovered.
• C、The database can be recovered by restoring the control files from the backup.
• D、The database remains opened and you have to shut it down with the ABORT option.
• E、The database can be restored till the point of the last closed whole database backup.

第5题：

You have lost datafile 4 from your database. Which is typically the fastest way to restore your database? （）

• A、Restore and recover the datafile. 
• B、Restore and recover the tablespace. 
• C、Restore and recover the database. 
• D、Restore and recover the control file. 
• E、Restore and recover the parameter file.

第6题：

You have lost datafile 4 from your database. Which is typically the fastest way to restore your database？（）  

• A、 Restore and recover the datafile.
• B、 Restore and recover the tablespace.
• C、 Restore and recover the database.
• D、 Restore and recover the control file.
• E、 Restore and recover the parameter file.

第7题：

You lost a temporary file that belongs to the default temporary tablespace in your database. From the options provided， which approach would you take to solve the problem？ （）

• A、flash back the database
• B、import the temporary tablespace from the last export
• C、restore all the data files and temporary files from the last full database backup and perform a recovery
• D、not perform a recovery， but create a new temporary tablespace， make it the default temporary tablespace and then drop the old tablespace

第8题：

It is not until you have lost your health（）you know its value.

Auntil

Bwhen

Cwhat

Dthat

第9题：

You executed the STARTUP MOUNT command to start your database. For which database operation do you need to start the database in the MOUNT state？（）

• A、renaming the control files
• B、dropping a user in your database
• C、enabling or disabling redo log archiving
• D、dropping a tablespace in your database
• E、re-creating the control files， after you lost all the control files in your database

第10题：

Your database has experienced a loss of datafile users_01.dbf， which is associated with a ablespace called USERS.  The database is still running.  Which answer properly describes the rder of the steps that you would use to recover from this error？（）   a. Shut down the database.  b. Take the users_01.dbf datafile offline with the alter database command.  c. Restore the users_01.dbf datafile from backup media with the required archived redo logs.  d. Restore all users tablespace-related datafiles from backup media. e. Issue the recover tablespace users command. f. Issue the recover datafile users_01.dbf command. g. Start up the database.  h. Bring the users_01.dbf datafile online with the alter database command. 

• A、a， c， f， g
• B、b， c， f， h
• C、a， b， c， f， g
• D、a， b， c， f， g， h
• E、b， c， f， e， g