单选题When performing an incomplete recover of the whole database， which data files must you restore？ （）A Only the damaged or lost data files.B All of the data files of the database.C Only the data files belonging to the SYSTEM tablespace.D The data files be

第1题：

Your database is running In ARCIIIVELOG mode. One of the data files， USBRDATAOI. DBF， in the users tablespace is damaged and you need to recover the file until the point of failure. The backup for the data file is available.  Which three files would be used in the user-managed recovery process performed by the database administrator （DBA）？（） 

• A、 redo logs
• B、 control file
• C、 temporary files of temporary tablespace
• D、 the latest backup of only the damaged data file
• E、 the latest backup of all the data files In the USERS tablespace

第2题：

You database operates in ARCHIVELOG mode and user-managed consistent backups are performed every Sunday night. On Tuesday， at 9：00 a.m. the current log sequence number was 369. Also， on Tuesday you lost the data file belonging to the SYSTEM tablespace and an achivelog file （sequence number 356） that contained redo entries between 8：00 a.m. and 8.30 a.m. With reference to this scenario， what would you do to recover the database？（）

• A、 Restore all the data files from last Sunday’s backup， and then perform a time-based recovery.
• B、 Restore all the data files from last Sunday’s backup， and then perform a cancel-based recovery.
• C、 Restore all the data files from last Sunday’s backup， and then perform a change-based recovery.
• D、 Restore only data files that belong to the SYSTEM tablespace from last Sunday’s backup， and then perform a complete recovery.

第3题：

You are working on a database that must be functioning 24 hours a day， 7 days a week. The databaseis configured in ARCHIVELOG mode.  Which two options do you have for performing user-managed backups（）

• A、You can perform consistent backups only.
• B、You can perform a complete database backup without shutting down the database instance.
• C、You can back up data files only when all data files have the same SCN recorded in the control file.
• D、You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGINBACKUP or ALTER DATABASE BEGIN BACKUP commands.

第4题：

Your multitenant container database (CDB) is running in ARCHIVELOG mode. You connect to the CDB RMAN. Examine the following command and its output: You execute the following command: RMAN > BACKUP DATABASE PLUS ARCHIVELOG; Which data files will be backed up?（）

• A、Data files that belong to only the root container
• B、Data files that belong to the root container and all the pluggable databases (PDBs)
• C、Data files that belong to only the root container and PDB$SEED
• D、Data files that belong to the root container and all the PDBs excluding PDB$SEED

第5题：

Your database is running in ARCHIVELOG mode, and the database is open. You execute an RMAN backupand specify the KEEP clause.Which components are backed up when this option is specified?（）

• A、only the control file, the current SPFILE, and data files
• B、only the current SPFILE and data files if autobackup is disabled
• C、only the data files and the archived redo logs
• D、the control file, current SPFILE file, data files, and archived redo logs

第6题：

Which files must be synchronized in order for a database to start？（）

• A、temp files
• B、online data files
• C、offline data files
• D、read only data files

第7题：

You are using Oracle Database 10g. Which statement regarding an incomplete recovery is true？（）

• A、 You do not need to restore all the data files.
• B、 You do not need to open the database with the RESETLOGS operation
• C、 You do not need to perform a full backup after the RESETLOGS operation.
• D、 You do not need to recover all the data files to the same system change number （SCN）.

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第13题：

Your database operates in ARCHIVELOG mode and all the tablespaces are online. Due to a user error， you decided to perform an incomplete recovery. Which two tasks would you be required to perform in the recovery process？（）

• A、 open the database with the RESTRICTED option
• B、 open the database with the RESETLOGS option
• C、 recover to the required SCN only that data file in which the error occurred
• D、 recover all the data files to the same system change number （SCN）

第14题：

You are using RMAN to perform a closed database backup of your database. You issue these RMAN commands： STARTUP MOUNT； BACKUP  FORMAT ’/BACKUP/df_%d_%s_%p.bus’  DATABASE filesperset = 2；  Which components are included in the backup？（）

• A、Only the data files.
• B、Only the data files and the online logs.
• C、The data files， control files， and the online logs.
• D、The data files and control files， but not the online logs.

第15题：

You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database.  Which method would you use to recover the data file？（）

• A、Restore all the data files and open the database
• B、Create the data file and performtablespacerecovery
• C、No need to restore any file， just recover the database
• D、Restore only the system data file and recover the database
• E、Restore only lost date file and performtablespacerecovery

第16题：

When performing an incomplete recover of the whole database， which data files must you restore？ （）

• A、Only the damaged or lost data files.
• B、All of the data files of the database.
• C、Only the data files belonging to the SYSTEM tablespace.
• D、The data files belonging to the SYSTEM tablespace and the damaged or lost data files.

第17题：

Your database operates in ARCHIVELOG mode and all the tablespaces are online. Due to a user error， you decided to perform an incomplete recovery.  Which two tasks would you be required to perform in the recovery process？ （）

• A、open the database with the RESETLOGS option
• B、open the database with the RESTRICTED option
• C、recover all the data files to the same system change number （SCN）
• D、recover to the required SCN only that data file in which the error occurred

第18题：

You lost a data file that belongs to an index tablespace in your database， which operates in ARCHIVELOG mode. Loss of the data file resulted in increased response time on your queries. Which two options would you use to solve this problem？ （）

• A、 Restore the lost data file from the backup， and then flash back the database.
• B、 Restore the data file pertaining to index tablespace， and then recover the tablespace.
• C、 Restore all the data files， and then perform an incomplete recovery to get the tablespace back.
• D、 Restore all the data files， and then perform an incomplete recovery using the backup control file.
• E、 Drop and re-create the index tablespace， and then re-create all of the indexes in that tablespace.

第19题：

Two data files have been deleted at the operating system level by accident. Your database is running in ARCHIVELOG mode and online backups are taken nightly. One of the data files that has been deleted belongs to the USERS tablespace on the other belongs to the SYSTEM tablespace. How can you recover from this situation？（）

• A、Shut down the database, restore the two data files and then start up the database. 
• B、Take the system and users tablespace offline, restore the two data files, recover the two datafiles, and then bring the SYSTEM and USERS tablespaces online. 
• C、Shut down the database, restore the two data files, start up the database in MOUNT mode, recover the two data files, and then alter the database open. 
• D、Take the SYSTEM and USERS tablespaces offline, recover the two datafiles and then bring the SYSTEM and USERS tablespaces online.

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