What are the two advantages of RMAN Block Media Recovery （BMR） over file/x7flevel recovery？（）

A

BMR lowers the mean time to recover （MTTR）.

B

BMR supports point­in­time recovery of individual data blocks.

C

BMR enables you to use incremental backups for block recovery.

D

BMR enables recovery even when the database is not mounted or open.

E

BMR enables you to use proxy backups to perform block media recovery.

F

BMR enables increased availability of data during recovery because the data file that requires a recovery can remain online.

相关问题推荐

• You are performing an incomplete recovery because a tablespace is dropped and purged from the Recycle Bin. In which mode will you execute the following code？（）  RMAN>RUN  {   SET UNTIL SEQUENCE  THREAD ；   RESTORE DATABASE；   RECOVER DATABASE；  }

  A、 NOMOUNT

  B、 MOUNT

  C、 OPEN

  D、 RESTRICTED

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• You are creating a cluster. The tables in the cluster have a relatively uniform distribution of values in the index column and the queries against the clustered table will almost use an equality operator to retrieve the desired row. Which type of cluster will you create？（）

  A、 Index cluster

  B、 Hash cluster

  C、 Sorted Hash cluster

  D、 Real Application Cluster

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• You are the Database Administrator for WonderWeb， which has recently acquired a media company TXGlobal. You have been assigned the task to migrate all the database applications of TXGlobal to the database server of WonderWeb. To accommodate more database applications， you need to add disks to the existing disk group. Whenever you add or remove disks from the disk group， Automatic Storage Management （ASM） rebalancing distributes the data evenly across all the disks of the disk group. Which background process performs this actual rebalancing activity， resulting in the movement of data extents in the disk groups？（）  

  A、 ASMB

  B、 ARBn

  C、 RBAL in the ASM instance

  D、 RBAL in the database instance

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• You are using Oracle Database 10g. You performed an  incomplete recovery of your database and opened the database with the RESETLOGS option.  What is the effect of opening the database with the RESETLOGS option？（）

  A

  This operation resets the SCN for the database.

  B

  This operation creates a new incarnation of the database.

  C

  This operation moves all the redo log files to a different location.

  D

  This operation deletes the old redo log files and creates new redo log files.

  E

  This operation updates all current datafiles and online redo logs and all subsequent archived redo logs with a new RESETLOGS SCN and time stamp.

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• Last night， a media failure caused the loss of a temporary file that belongs to your database. Which two things may happen this morning when you try to open your database？ （）

  A

  The database opens normally.

  B

  The database prompts for a database recovery.

  C

  The database writer writes to a trace file， indicating that the temporary file is not found.

  D

  The database gets mounted and throws an error indicating that the temporary file requires recovery.

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