单选题You are using Oracle Database 10g. Which statement regarding an incomplete recovery is true？（）AYou do not need to restore all the data files.BYou do not need to open the database with the RESETLOGS operationCYou do not need to perform a full backup aft

第1题：

Every Sunday， consistent backups are performed on your database. Because of a user error， you performed an incomplete recovery on Tuesday and opened the database with the RESETLOGS option. A user error occurs again on Thursday， which necessitates an incomplete recovery. Sunday’s backup is the most recent backup available. What would you do in this scenario？（）

• A、recovery cannot be performed because a backup was not performed after the last incomplete recovery
• B、restore all the files from Sunday’s backup， and then perform an incomplete recovery up to the point in time when the user error occurred on Thursday
• C、restore all the files from Sunday’s backup， and then recover up to the point in time when the RESETLOGS operation was performed on Tuesday
• D、restore all the files from Sunday’s backup， and open the database to reset the database to the point in time when the backup was performed on Sunday

第2题：

You need to perform a block media recovery on the tools01.dbf data file in the SALES database by using Recovery Manager (RMAN). Which two are the prerequisites to perform this operation? （）(Choose two)

• A、You must configure block change tracking file
• B、You must have first level 1 backups for RMAN to restore blocks
• C、You must ensure that the SALES database is mounted or open
• D、You must have full or level 0 backups for RMAN to restore blocks
• E、You must take the tools01.dbf data file offline before you start a block media recovery

第3题：

You have a database with the following tablespaces： SYSTEM， SYSAUX， UNDO， USERS， TEMP. You want to"roll back" the data in the USERS tablespace to the way it looked yesterday.  Which tablespaces do you need to perform a point-in-time restore operation on in order to complete this task？（） 

• A、 SYSTEM
• B、 SYSAUX
• C、 UNDO
• D、 USERS
• E、 TEMP
• F、 This restore is not possible

第4题：

In your database， all the tablespaces are locally managed. You started Recovery Manager （RMAN） using recovery catalog and restored the control file by using the following command： RMAN> RESTORE CONTROLFILE;  Which two operations do you need to perform after restoring the control file from backup？（）

• A、shut down and restart the instance
• B、add new tempfiles to the temporary tablespaces after recovery
• C、perform a media recovery and open the database with the RESETLOGS option
• D、perform a media recovery and bring the database to NOARCHIVELOG mode

第5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6题：

You have lost all your database control files. To recover them， you are going to use the results of the alter database backup controlfile to trace command. Your datafiles and your online redo logs are all intact.  Which of the following is true regarding your recovery？（）  

• A、 You will need to open the database with the resetlogs command.
• B、 All you need to do is execute the trace file from SQL*Plus and it will perform the recovery for you.
• C、 You will use the resetlogs version of the create controlfile command.
• D、 You will use the noresetlogs version of the create controlfile command.
• E、 You will use the trace file to create a backup control file， and then you will recover the database with the recover database using backup controlfile command

第7题：

A support engineer reports that inserting new sales transactions in a SQL Server 2005 database results in an error. You investigate the error. You discover that in one of the databases， a developer has accidentally deleted some data in a table that is critical for transaction processing. The database uses the full recovery model. You need to restore the table. You need to achieve this goal without affecting the availability of other data in the database. What should you do？（）

• A、Back up the current transaction log. Restore the database with a different name and stop at the point just before the data loss. Copy the table back into the original database.
• B、Back up the current transaction log. Restore the database to the point just before the data loss.
• C、Restore the database from the existing backup files to a time just before the data loss.
• D、Restore the database to the point of the last full backup.

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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 maintaining the database in Oracle10g. You are performing an incomplete recovery by using RMAN because an important table， EMPLOYEE， is dropped and purged from the Recycle Bin. Which statement is NOT true regarding an incomplete recovery？（）

• A、 The target database must be in the MOUNT mode to ensure restoration of the datafiles.
• B、 You can restore the datafiles from the backup by using the RMAN utility only if the backups were taken using the RMAN utility.
• C、 The control file must be recreated.
• D、 The database must be opened with the RESETLOGS option.

第15题：

A data file become corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）

• A、 Flash back all the tables in the data file， one by one.
• B、 Restore the data file to a new location and perform a media recovery.
• C、 Flash back the database， there is no need to restore the data file.
• D、 Restore the data file from the most recent backup and flash the database.

第16题：

Which statement about recovering from the loss of a redo log group is true?（）

• A、If the lost redo log group is ACTIVE, you should first attempt to clear the log file.
• B、If the lost redo log group is CURRENT, you must clear the log file.
• C、If the lost redo log group is ACTIVE, you must restore, perform cancel-based incomplete recovery, and open the database using the RESETLOGS option.
• D、If the lost redo log group is CURRENT, you must restore, perform cancel-based incomplete recovery, and open the database using the RESETLOGS option.

第17题：

You are maintaining your database in Oracle10g. On Tuesday at 8：00 A.M.， while starting the database， you discover that all the control files are missing. The backup of the full database was performed on Sunday at 6：00 P.M. Which type of recovery will you perform？（）

• A、 incomplete recovery
• B、 complete recovery
• C、 recovery using the Flashback Database feature
• D、 recovery using the export/import utility

第18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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