单选题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 fil

第1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2题：

You work as a database administrator for Supportcenter.cn. You added atablespaceto your database. Because of the changes to the physical structure of your database， you performed a backup of the control file to trace. After this， you lost only the control files and the instance aborted due to a hardware failure. How would you proceed to recover the database？（）

• A、Start the instance and open the database， instance recovery automatically recoverscontrol files
• B、Create a file based on the contents of the trace file and save it to the control file locations and start the database
• C、Re-create the database （The recovery of the control file is not possible because you have lost all the control files.）
• D、Start the instance， in the NOMOUNTstate，re-create the control file using the CREATE CONTROLFILE command stored in the trace file.
• E、Start the instance and MOUNT the database， then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.

第3题：

What methods are available to recover lost control files？（） 

• A、 Backup control file.
• B、 Emergency control file.
• C、 The create controlfile command.
• D、 The restore controlfile SQL*Plus command.
• E、 No backup is required. The database will re-create the control file when it is discovered to be lost.

第4题：

You work as a database administrator for Certkiller .com. You added atablespaceto your database. Because of the changes to the physical structure of your database， you performed a backup of the control file to trace. After this， you lost only the control files and the instance aborted due to a hardware failure.  How would you proceed to recover the database？（）

• A、Start the instance and open the database, instance recovery automatically recovers control files 
• B、Create a file based on the contents of the trace file and save it to the control file locations and start the database 
• C、Re-create the database (The recovery of the control file is not possible because you have lost all the control files.) 
• D、Start the instance, in the NOMOUNTstate,re-create the control file using the CREATE CONTROLFILE command stored in the trace file. 
• E、Start the instance and MOUNT the database, then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.

第5题：

In which situation will you run the script containing the following statement？（）   CREATE CONTROLFILE REUSE DATABASE SALES NORESETLOGS ARCHIVELOG        MAXLOGFILES 20        MAXLOGMEMBERS 3        MAXDATAFILES 30        MAXINSTANCES 10        MAXLOGHISTORY 1200        LOGFILE        GROUP 1 （   ’/disk1/prod/orders/db/log1a.dbf’，        ’/disk2/prod/orders/db/log1b.dbf’        ）SIZE 100K        GROUP 2 （   ’/disk1/prod/orders/db/log2a.dbf’，        ’/disk2/prod/orders/db/log2b.dbf’        ） SIZE 100K，        DATAFILE   ’/disk1/prod/orders/db/database1.dbf’，                                           ’/disk2/prod/orders/db/file1.dbf ’；  

• A、 when all the control files are missing and only a binary backup of the current control file exists
• B、 when a multiplexed copy of the current control file is missing
• C、 when all the control files are missing and only an ASCII representation of the binary control file exists
• D、 when the SPFILE is missing

第6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7题：

You issued the following statement：  SQL> ALTER DATABASE BACKUP CONTROLFILE TO TRACE；  What will be the result of issuing the statement？（）  

• A、 The control file will be multiplexed.
• B、 The control file will be recreated.
• C、The script containing the CREATE CONTROLFILE statement will be created.
• D、 The binary backup of the control file will be created.

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 executed the following command to back up your control file：  ALTER DATABASE BACKUP CONTROLFILE TO TRACE；  Which initialization parameter is used to specify the location of the trace file？（）

• A、USER_DUMP_DEST
• B、CORE_DUMP_DEST
• C、TRACE_DUMP_DEST
• D、BACKUP_DUMP_DEST
• E、BACKGROUND_DUMP_DEST

第10题：

In which of the following scenarios is a tablespace recovery required？（）

• A、 when recovering a lost read-only tablespace from a read-only tablespace backup
• B、 when recovering a lost read-only tablespace from a read-write tablespace backup when the database is running in  ARCHIVELOG mode
• C、 when recovering a lost read-only tablespace from a read-write tablespace backup when the database is running in  NOARCHIVELOG mode and the changes in the online redo log files have been overwritten
• D、 when recovering a lost read-only tablespace from a read-only tablespace backup using the backup of the control file， the control file was created using the ALTER DATABASE BACKUP CONTROLFILE TO TRACE statement， and this statement was issued when the tablespace was read-only