多项选择题

In Recovery Manager （RMAN）， you are taking image copies……

In Recovery Manager （RMAN）， you are taking image copies of the datafiles of your production database and rolling them forward as regular intervals. You attempt to restart your database instance 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 datafile by using the image copy. You could perform the following steps to accomplish this：
1） Mount the database
2） Take the data file offline
3） Bring the data file online
4） Use the RMAN SWITCH TO command to switch the image copy
5） Apply the archived redo logs
6） Open the database
7） Use the RMAN RESTORE TO command to switch to the image copy
Which two options illustrate the correct sequence of steps that you could follow？（）

A. 2， 6， 4， 5， 3
B. 1， 2， 4， 5， 3， 6
C. 1， 2， 4， 6， 3
D. 1， 2， 7， 5， 3， 6

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热门试题

单项选择题Examine the following RMAN command： RMAN> CONFIGURE ENCRYPTION FOR DATABASE ON； RMAN> BACKUP DATABASE PLUS ARCHIVELOG； Which prerequisite must be met before accomplishing the backup？（）

A. Provide a password for the encryption
B. Set up an Oracle wallet for the encryption
C. No setup is required as it is a default encryption method
D. Both Oracle wallet and password must be set up for the encryption

单项选择题AfteryouhaverestoredandrecoveredadatabasetoanewhostbyusingapreviouslyperformedRecoveryManager（RMAN）backup，whichisthebestoptionyouwouldconsiderforthenewdatabase？（）

A. Opening the database in RESTRICTED mode
B. Opening the database with the RESETLOGS option
C. Setting a new DBID for the newly restored database
D. Restoring the server parameter file （SPFILE） to the new host

多项选择题UserSCOTTwantstobackoutthetransactionsontheREGIONStableinhisschema.AsaDBA，whichcommandsmustyouexecutetoenableSCOTTtoflashbackthetransactions？（）

A. ALTER DATABASE FLASHBACK ON
B. GRANT SELECT any transaction TO scott
C. GRANT EXECUTE ON dbms_flashback TO scott
D. ALTER DATABASE ADD SUPPLEMENTAL LOG DATA
E. ALTER TABLESPACE undots1 RETENTION GUARANTEE
F. ALTER DATABASE ADD SUPPLEMENTAL LOG DATA （PRIMARY KEY） COLUMNS

单项选择题Examine the following RMAN script： RMAN> run { debug on； allocate channel c1 type disk； backup datafile 5； } Which statement describes the purpose of the script？（）

A. The data file is checked for physical corruption and backed up if found clean.
B. The backup of data file 5 is performed and the interactive messages during the backup are suppressed.
C. The existing backup for the data file is checked and the backup is performed if there are changes in the data file after the last backup.
D. The backup of data file 5 is performed and all SQL statements that are executed during RMAN compilation and their results are displayed

单项选择题WhatdoestheDB_FLASHBACK_RETENTION_TARGETparameterconfigure？（）

A. An upper limit on how far you can flash back the database，depending on the information in the redo logs
B. An upper limit on how far you can flash back the database，depending on the information in the undo tablespace
C. The amount of time for which the flashback data is to be kept in the flash recovery area， provided that there is enough space
D. The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace，provided that there is enough space