单选题Which command will restore all datafiles to the date 9/30/2008 at 18:00 hours? ()Arestore datafiles until time '09/28/2008:21:03:11'Brestore database files until time '09/28/2008:18:00:00'Crestore database until time '09/28/2008:18:00:00'Drecover database until time '09/28/2008:18:00:00'Erecover database until timestamp '09/28/2008:18:00:00'

单选题
Which command will restore all datafiles to the date 9/30/2008 at 18:00 hours? ()
A

restore datafiles until time '09/28/2008:21:03:11'

B

restore database files until time '09/28/2008:18:00:00'

C

restore database until time '09/28/2008:18:00:00'

D

recover database until time '09/28/2008:18:00:00'

E

recover database until timestamp '09/28/2008:18:00:00'


参考解析

解析: 暂无解析

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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.

单选题Your database is configured in NOARCHIVELOG mode. Due to a media failure, you have lost one of the datafiles belonging to a read-only tablespace. You know that the last backup was performed after the tablespace was made read-only. Which action should you take to restore the missing datafile in the minimum amount of time?()A Restore all the datafiles from the backup.B Restore only the lost datafile from the backup.C Restore all the datafiles for the lost tablespace from the backup.D Restore all the datafiles for the lost tablespace and all the SYSTEM and SYSAUX datafiles from the backup.

单选题Your ARCHIVELOG-mode database has lost three datafiles and shut down. One is assigned to the SYSTEM tablespace and two are assigned to the USERS tablespace. You can choose from the following steps to recover your database:   a. Restore the three database datafiles that were lost.  b. Issue the Startup Mount command to mount the database.  c. Issue the alter database open command.  d. Issue the alter database open resetlogs command.  e. Recover the database using the recover database command. f. Recover the datafiles with the recover datafile command.  g. Take the datafiles offline.  Which is the correct order of these steps in this case?()Aa, b, e, cBb, e, dCa, b, d, cDb, g, c, fEa, b, d, f

单选题You have lost all your SYSTEM tablespace datafiles (system_01.dbf and system_02.dbf) nd the database has crashed.  What would be the appropriate order of operations to correct the situation?()   a. Mount the database with the startup mount command.  b. Take the SYSTEM datafile offline with the alter database command.  c. Restore the SYSTEM_01.dbf datafile from backup media with the required archived redo logs.  d. Restore all SYSTEM tablespace-related datafiles from backup media. e. Issue the recover tablespace SYSTEM command.  f. Issue the recover datafile SYSTEM_01.dbf command.  g. Open the database with the alter database open command.  h. Open the database with the alter database open resetlogs command.Aa, c, f, gBb, d, e, hCa, b, c, f, gDd, a, e, gEb, c, f, e, g

单选题You took the DATA1 tablespace offline at 10:00 A.M. At 12:30 P.M., a schema of a user is dropped and purged from the Recycle Bin. You noticed this at 2:00 P.M. and decided to perform an incomplete recovery.  Which datafiles will you recover?()A all the datafiles in the databaseB the datafiles associated with the SYSTEM tablespaceC the datafiles associated with the DATA1 tablespaceD all the datafiles in the database except those associated with the DATA1 tablespace

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