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单选题
Data file DF1 belongs to tablespace TS1.，and the database is in ARCHIVELOG mode. You did an incomplete recover in the following steps： 1. Take data file DF1 offline. 2. Copy a backup copy of DF1 into the current DF1 location. 3. Execute RECOVER DATAFILE UNTIL TIME sometime in the past. 4. Bring DF1 online. 5. Execute ALTER DATABASE OPEN RESETLOGS. To guarantee that the database is recoverable in the future， what is the least amount of work needed？（）
A
Back up the data file.
B
Bring tablespace TS1 online.
C
Copy redo logs to the backup directory.
D
Make a complete backup right after opening the database.
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更多 “单选题Data file DF1 belongs to tablespace TS1.，and the database is in ARCHIVELOG mode. You did an incomplete recover in the following steps： 1. Take data file DF1 offline. 2. Copy a backup copy of DF1 into the current DF1 location. 3. Execute RECOVER DATAFILE UNTIL TIME sometime in the past. 4. Bring DF1 online. 5. Execute ALTER DATABASE OPEN RESETLOGS. To guarantee that the database is recoverable in the future， what is the least amount of work needed？（）A Back up the data file.B Bring tablespace TS1 online.C Copy redo logs to the backup directory.D Make a complete backup right after opening the database.” 相关考题
考题
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 databaseB、import the temporary tablespace from the last exportC、restore all the data files and temporary files from the last full database backup and perform a recoveryD、not perform a recovery， but create a new temporary tablespace， make it the default temporary tablespace and then drop the old tablespace
考题
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 logsB、 control fileC、 temporary files of temporary tablespaceD、 the latest backup of only the damaged data fileE、 the latest backup of all the data files In the USERS tablespace
考题
Your Supportcenter.cn database is in ARCHIVELOG mode. The data file that belongs to the SYSTEM tablespace has become corrupted. Up to what point can you recover the database？（）A、Until last commitB、Until the time you perform recoveryC、Until the time the date file got corruptedD、Until the point where the last transaction begunE、You cannot recover the SYSTEMtablespaceand must re-create the database.
考题
View this parameter setting in your database： DB_CREATE_FILE_DEST=’D:// /oracle/product/10.2.0/oradata/oracle’ You created a tablespace by using this command： CREATE TABLESPACE USERS； Which two statements are true about the USERS tablespace？（）A、The tablespace has two data files.B、An error is reported and tablespace creation fails.C、Data files are created with names generated by the instance.D、The tablespace can be extended without specifying the data file.E、Data files belonging to the USERS tablespace cannot be renamed.
考题
There is a problem with one of the disks used for your database and your system administrator informs you that the disk needs to be replaced. The replacement disk will not be available until tomorrow. There was only one data file on this disk； it belongs to the USERS tablespace in your PROD database. Your PROD database runs in ARCHIVELOG mode and nightly online backups are taken. The users need to be able to access the data in the USERS tablespace before the replacement disk arrives. You have already taken the USERS tablespace offline and have restored the data file from last night’s backup to a new disk. Which additional steps are required in order to make the USERS tablespace available？（）A、Only bring the tablespace back online.B、Only recover the tablespace and then bring the tablespace back online.C、Shut down the database， recover the data file and then start up the database.D、Issue the ALTER DATABASE RENAME FILE command， recover the tablespace， and then bring the tablespace online.E、Recover the tablespace， issue the ALTER DATABASE RENAME FILE command， and then bring the tablespace online.
考题
The loss of the control file forced you to re-create the control file. After re-creating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five-digit number starting with 0. What could be the possible reason？（）A、 These are the data files that are corrupted.B、 There is no SYSAUX tablespace in your databaseC、 There is a read-only tablespace in your database.D、 These are the data files that cannot be recovered.
考题
To accomplish user-managed backup for the USERS tablespace, you issued the following command to put the database in backup mode: SQL ALTER TABLESPACE users BEGIN BACKUP; While copying the file to the backup destination a power outage caused the instance to terminate abnormally. Which statement is true about the next database startup and the USERS tablespace?（）A、The database will open, and the tablespace automatically comes out of the backup modeB、The database will be mounted, and recovery must be performed on the USERS tablespace.C、The database will be mounted, and data files in the USERS tablespace must be taken out of the backup mode.D、The database will not be mounted, and you must restore all the data files for the USERS tablespace from the backup, and perform recovery.
考题
单选题There is a problem with one of the disks used for your database and your system administrator informs you that the disk needs to be replaced. The replacement disk will not be available until tomorrow. There was only one data file on this disk； it belongs to the USERS tablespace in your PROD database. Your PROD database runs in ARCHIVELOG mode and nightly online backups are taken. The users need to be able to access the data in the USERS tablespace before the replacement disk arrives. You have already taken the USERS tablespace offline and have restored the data file from last night’s backup to a new disk. Which additional steps are required in order to make the USERS tablespace available？（）A
Only bring the tablespace back online.B
Only recover the tablespace and then bring the tablespace back online.C
Shut down the database， recover the data file and then start up the database.D
Issue the ALTER DATABASE RENAME FILE command， recover the tablespace， and then bring the tablespace online.E
Recover the tablespace， issue the ALTER DATABASE RENAME FILE command， and then bring the tablespace online.
考题
单选题You work as a database administrator for Supportcenter.cn. 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 databaseB
Create the data file and perform tablespace recoveryC
No need to restore any file， just recover the databaseD
Restore only the system data file and recover the databaseE
Restore only lost date file and performtablespacerecovery
考题
多选题In RMAN， when the RESYNC CATALOG command is issued， in which two situations does the command file actually perform synchronization？（）AAfter the COPY command.BAfter adding a data file in the target database.CAfter adding a tablespace in the target database.DAfter adding a tablespace in the catalog database.EAfter dropping a data file in the catalog database.FAfter running SQL Loader to load a large amount of data.
考题
单选题Your test database is configured to run in NOARCHIVELOG mode. One of the data files in the USERS tablespace is lost due to a media failure. You notice that all the online redo logs have been overwritten sincethe last backup. What would you do to recover the data file（）A
Take the USERS tablespace offline and re-create the lost data file.B
Shut down the instance， restore the data file from the last consistent backup， and restart the databaseinstance.C
Shut down the instance， restore all the database files from the last consistent backup， and restart thedatabase instance.D
Take the USERS tablespace offline， restore all the data files of the USERS tablespace from the lastconsistent backup， and make the tablespace online
考题
单选题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.
考题
单选题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 recoveryB
take data files from the readonly tablespace offline before performing a recoveryC
perform a recovery; status of the tablespace in control file will be changed automaticallyD
recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database
考题
单选题In Recovery Manager (RMAN), you are taking image copies of the data files of your production database and rolling them forward at regular intervals. You attempt to restart your database. After a regular maintenance task, you realize that one of the data files that belongs to the USERS tablespace is damaged and you need to recover the data file by using the image copy. Because a media failure caused the data file to be damaged, you want to place the d ata file in a different location while restoring the file. Which option must you consider for this task?（）A
using only the RMAN SWITCH command to set the new location for the data fileB
placing the database in the MOUNT state for the restore and recovery operations.C
using an RMAN RUN block with the SET NEWNAME and then the SWITCH command.D
configuring two channels: one for the restore operation and the other for the recovery operation
考题
单选题Your database is in NOARCHIVELOG mode and a logswitch happens every 20 minutes. On Thursday morning， media failure resulted in corruption of a data file belonging to the TOOLS tablespace. Backups are taken on every Sunday.What would you do in this situation？（）A
recover using Oracle Flashback Database technologyB
restore the data files from backup and perform a complete recoveryC
restore only the corrupted data file and perform tablespace recoveryD
restore the data files from backup and perform cancelbased recoveryE
restore the entire database from the most recent backup and start the instance and open the database
考题
单选题To accomplish user-managed backup for the USERS tablespace, you issued the following command to put the database in backup mode: SQL ALTER TABLESPACE users BEGIN BACKUP; While copying the file to the backup destination a power outage caused the instance to terminate abnormally. Which statement is true about the next database startup and the USERS tablespace?（）A
The database will open, and the tablespace automatically comes out of the backup mode.B
The database will be mounted, and recovery must be performed on the USERS tablespace.C
The database will be mounted, and data files in the USERS tablespace must be taken out of the backup mode.D
The database will not be mounted, and you must restore all the data files for the USERS tablespace from the backup, and perform recovery.
考题
多选题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）？（）Aredo logsBcontrol fileCtemporary files of temporary tablespaceDthe latest backup of only the damaged data fileEthe latest backup of all the data files In the USERS tablespace
考题
多选题Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancel-based recovery？ （）AYou find that one of the redo log members in each redo log group is lost.BYou find that a data file that belongs to the USERS tablespace is damaged.CYou find that a data file that belongs to the SYSTEM tablespace is damaged.DYou find that the current redo log group is damaged and is not available for recovery.EYou realized while performing a recovery that an archived redo log file needed for recovery is lost.
考题
单选题Your test database is configured to run in NOARCHIVELOG mode. One of the data files in the USERS tablespace is lost due to a media failure. You notice that all the online redo logs have been overwritten sincethe last backup. What would you do to recover the data file（）A
Take the USERS tablespace offline and re-create the lost data file.B
Shut down the instance， restore the data file from the last consistent backup， and restart the databaseinstance.C
Shut down the instance， restore all the database files from the last consistent backup， and restart thedatabase instance.D
Take the USERS tablespace offline， restore all the data files of the USERS tablespace from the lastconsistent backup， and make the tablespace online
考题
单选题Your database is set in NOARCHIVELOG mode and is backed up every night. There are 10 redo log groups on the database， each with three members， making a total of 30 redo log files. At lunchtime the server unexpectedly gets shut down. Upon restarting you notice that the data file belonging to the SYSTEM tablespace has become corrupted. You also notice that there have been 15 log switches during the day. Which solution should you use to recover as much committed data as possible？（）A
Restore the data file for the SYSTEM tablespace then open the database. B
Restore all redo logs form last night's backup, then restart the database. C
Perform a complete restore of all files from last night's backup. Data entered into the database today must be reentered. D
Mount the instance, take the SYSTEM tablespace offline, open the database, and then restore the data file, recover it, and bring the tablespace online.
考题
单选题Your Supportcenter.cn database is in ARCHIVELOG mode. The data file that belongs to the SYSTEM tablespace has become corrupted. Up to what point can you recover the database？（）A
Until last commitB
Until the time you perform recoveryC
Until the time the date file got corruptedD
Until the point where the last transaction begunE
You cannot recover the SYSTEMtablespaceand must re-create the database.
考题
单选题Your test database is configured to run in NOARCHIVELOG mode. One of the data files in the USERStablespace is lost due to a media failure. You notice that all the online redo logs have been overwritten since the last backup. What would you do to recover the data file（）A
Take the USERS tablespace offline and re-create the lost data file.B
Shut down the instance， restore the data file from the last consistent backup， and restart the databaseinstance.C
Shut down the instance， restore all the database files from the last consistent backup， and restart thedatabase instance.D
Take the USERS tablespace offline， restore all the data files of the USERS tablespace from the lastconsistent backup， and make the tablespace online.
考题
单选题In Recovery Manager (RMAN), you are taking image copies of the data files of your production database and rolling them forward at regular intervals. You attempt to restart your database. After a regular maintenance task, you realize that one of the data files that belongs to the USERS tablespace is damaged and you need to recover the data file by using the image copy. Because a media failure caused the data file to be damaged, you want to place the data file in a different location while restoring the file. Which option must you consider for this task?（）A
using only the RMAN SWITCH command to set the new location for the data fileB
placing the database in the MOUNT state for the restore and recovery operations.C
using an RMAN RUN block with the SET NEWNAME and then the SWITCH command.D
configuring two channels: one for the restore operation and the other for the recovery operation
考题
多选题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？ （）ARestore the lost data file from the backup， and then flash back the database.BRestore the data file pertaining to index tablespace， and then recover the tablespace.CRestore all the data files， and then perform an incomplete recovery to get the tablespace back.DRestore all the data files， and then perform an incomplete recovery using the backup control file.EDrop and re-create the index tablespace， and then re-create all of the indexes in that tablespace.
考题
多选题The database is running in NOARCHIVELOG mode. A data file is lost. Which two are valid options for recover？（）ARestore the data file and perform incomplete recovery.BRestore the data file and perform point-in-time recover.CDrop the tablespace and lose all data in the tablespace.DRestore the database and lose all data since the last backup.
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