Which is not a valid way of backing up a control file？（）  A、 Backing up the control file to traceB、 Copying the existing control file of the database to the backup location during a hot backup C、 Copying the existing control file of the database to the ba

第1题：

You have discovered that one of three control files has been lost. What steps would you follow to recover that control file？（）   a. Shut down the database.  b. Restore a control-file copy from backup media.  c. Use the create control file command to create a new control file.  d. Copy the backup control file into place.  e. Create a new copy of the control file from one of the surviving control files.  f. Recover the database using the recover database using backup control file command.  g. Start up the database. 

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

第2题：

You executed the following command to back up the control file： ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What do you find in the trace file？（）

• A、Image of the control file
• B、Location of the control file
• C、Contents of the control file in text format
• D、SQL command to re-create the database
• E、SQL command to re-create the control file
• F、Contents of the control file in binary format

第3题：

第4题：

You have a read/x7fonly tablespace on read/x7fonly 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 read/x7fonly 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

第5题：

You have a read-only tablespace on read-only 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 read-only tablespace was read/write when the control file was backed up. What should you consider？（）

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

第6题：

In Recovery Manager （RMAN）， you have set control file autobackup to ON by using the following command：  CONFIGURE CONTROLFILE AUTOBACKUP ON;  Which two events would cause the control file to be backed up automatically？ （）

• A、a tablespace is taken offline
• B、the database instance is restarted
• C、a new data file is added to an existing tablespace
• D、a successful backup is recorded in the RMAN repository
• E、the RMAN connection is disconnected from the target database

第7题：

ou are implementing control file multiplexing. Which of the following choices identifies the method you can use in order to generate the control file copies that Oracle will maintain?（）

• A、Issue ALTER DATABASE BACKUP CONTROLFILE TO filename
• B、Make a copy of the control file with the database shut down
• C、Issue ALTER DATABASE BACKUP CONTROLFILE TO trace
• D、Make a copy of the control file with the database still running 

第8题：

You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE；  What does the statement generate？（）

• A、A text copy of the control file.
• B、A binary copy of the control file.
• C、A file containing a SQL statement which will re-create the database.
• D、A file containing a SQL statement which will re-create the control file.

第9题：

You work as a database administrator for Supportcenter.cn. You started the instance using theinit.orafile. You have two control files and three redo log groups in your database. You decided to protect the database against failures by adding one more control file. Which file is the appropriate way to perform this task？（）

• A、Shut down the instance， copy the control file to the third location and open the database.
• B、Abort the instance， copy the control file to the third location， modify the CONTROL_FILES parameter in theinit.orafile and open the database.
• C、Copy the control file to the third location， modify the CONTROL_FILES parameter in theinit.orafile， restart the instance and open the database.
• D、Shut down the instance， copy the control file to the third location， modify the CONTROL_FILES parameter in theinit.orafile and open the database.
• E、Shut down the instance， startup in the mount state， copy the control file to the third location， modify the CONTROL_FILES parameter ininit.oraand open the database.

第10题：

You are maintaining your database in Oracle10g. You are performing the backup by using the BACKUP AS BACKUPSET command at the RMAN prompt. Which file cannot be backed up by using the BACKUP AS BACKUPSET command？（）

• A、Datafiles
• B、 Current control file
• C、 Server parameter file （spfile）
• D、 Password file