单选题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

单选题
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


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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, gB、c, f, gC、a, d, f, gD、a, f, gE、a, e, g

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单选题You are using Recovery Manager (RMAN) with a recovery catalog to back up your production database. The backups and the archived redo log files are copied to a tape drive on a daily basis. Because of media failure, you lost your production database completely along with the recovery catalog database. You want to recover the target database and make it functional. You could consider performing the following steps to accomplish this task:   1) Restore an autobackup of the server parameter file.  2) Restore the control file.  3) Start the target database Instance.  4) Mount the database. 5) Restore the data files.  6) Open the database with the RESETLOGS option.  7) Recover the data files.  8) Set DBID for the target database   Which option illustrates the correct sequence that you must use?()A 8, 1, 3, 2, 4, 5, 7, 6B 1, 8, 3, 4, 2, 5, 7, 6C 1, 3, 4, 2, 8, 5, 6, 7D 1, 3, 2, 4, 6, 5, 7, 8

单选题You have lost all your RMAN backup set pieces due to a disk failure. Unfortunately, you have an automated cross-check script that also does a delete expired backupset command. You have restored all the backup set pieces from tape.  What command would you use to get those backup set pieces registered in the recovery catalog and the control file of the database again?()A register databaseB recover catalogC load backupsetD synch metadataE catalog start with

单选题You have lost datafile 4 from your database. Which is typically the fastest way to restore your database?()A Restore and recover the datafile.B Restore and recover the tablespace.C Restore and recover the database.D Restore and recover the control file.E Restore and recover the parameter file.

单选题Your database has a backup that was taken yesterday (Tuesday) between 13:00 and 15:00 hours. This is the only backup you have. You have lost all the archived redo logs generatedsince the previous Monday, but you have archived redo logs available from the previous Sunday and earlier. You now need to restore your backup due to database loss.  To which point can you restore your database?()A 13:00 on Tuesday.B 15:00 on Tuesday.C Up until the last available archived redo log on Sunday.D To any point; all the redo should still be available in the online redo logs.E The database is not recoverable.

单选题You have lost datafile 4 from your database. Which is typically the fastest way to restore your database? ()ARestore and recover the datafile. BRestore and recover the tablespace. CRestore and recover the database. DRestore and recover the control file. ERestore and recover the parameter file.

单选题You have recovered your Oracle Database 10g by using the control file backup because all copies of the current control file have been lost due to a media failure. You open your database by using the following statement:       SQLALTER DATABASE OPEN RESETLOGS;   Which of the following options is true about using the RESETLOGS option?()A The log sequence is reset to 0.B All the online redo logs are deleted.C All the archived redo logs from a previous incarnation become useless.D The full database backup taken from a previous incarnation can be used in future.E Only the control file and online redo log files are updated with a new RESETLOGS SCN and time stamp.

单选题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?()AStart the instance and open the database, instance recovery automatically recoverscontrol filesBCreate a file based on the contents of the trace file and save it to the control file locations and start the databaseCRe-create the database (The recovery of the control file is not possible because you have lost all the control files.)DStart the instance, in the NOMOUNTstate,re-create the control file using the CREATE CONTROLFILE command stored in the trace file.EStart the instance and MOUNT the database, then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.

单选题In your database, online redo log files are multiplexed and one of the members in a group is lost due to media failure? How would you recover the lost redo log member?()A import the database from the last exportB restore all the members in the group from the last backupC drop the lost member from the database and then add a new member to the groupD restore all the database files from the backup and then perform a complete recoveryE restore all the database files from the backup and then perform an incomplete recovery

单选题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

单选题Your developers have asked you to restore the development database, which is in NOARCHIVELOG mode, back to last Tuesday the 20th. Your last backup is from Monday the 19th. What do you do?()A Restore the 19ths backup, restore all archived redo logs, recover the database to the 20th,and open the database.B Tell them that their request cannot be met with the current backup strategy.C Restore the 19ths backup, apply the online redo logs,and open the database.D Switch the database into ARCHIVELOG mode,restore the 19th’s backup,restore all archived redo  logs,and recover the database to the 20th.E Use the recover database command to roll back the database from today to the 19th of the month.

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.

多选题Your database is configured in NOARCHIVELOG mode. All the control files have been lost due to a hard disk failure but the data files are not lost. You have the closed whole database backup available to you.  Which two statements are true in this scenario?()AThe instance aborts.BThe database cannot be recovered.CThe database can be recovered by restoring the control files from the backup.DThe database remains opened and you have to shut it down with the ABORT option.EThe database can be restored till the point of the last closed whole database backup.

单选题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?()ARestore all the data files and open the databaseBCreate the data file and performtablespacerecoveryCNo need to restore any file, just recover the databaseDRestore only the system data file and recover the databaseERestore only lost date file and performtablespacerecovery

单选题You have lost datafiles 1 and 3 from your database,and the database has crashed.  In what order should you perform the following steps to recover your database?() 1. Take the datafiles that were lost offline.  2. startup mount the database  3. Issue the alter database open command. 4. Restore the datafiles that were lost  5. Recover the datafiles with the recover datafile command. 6. Bring the datafiles back online.  7. Recover the database with the recover database command.A 2,1,3,4,5,6B 2,4,5,3C 4,7,3D 2,4,7,3E 2,7,3