Which two statements are true about the duplexing of the backups taken by RMAN? (Choose two.)

A. It's only supported for the backups performed on the tape

B. It is not supported for backup operations that produce image copies C. Duplex backups need a parallelism for the device to be equal to number of copies

D. Duplex backups can be performed to either disk or tape, but cannot be performed on tape and disk simultaneously

SQL> SELECT blocks FROM user_segments WHERE segment_name=,ALTBT; BLOCKS

SQL> ALTER TABLE altb SHRINK SPACE COMPACT;

Table altered.

SQL> SELECT blocks FROM user_segments WHERE segment_name=*ALTB*;

BLOCKS

View the Exhibit and examine the output and commands executed on the ALTB table.

Why does the number of blocks for the table remain the same after the shrink operation?

A. because the table did not contain migrated or chained rows

B. because the row IDs remain the same for all rows during the shrink operation

C. because the progress of the shrink operation is not saved in the bitmap blocks of the table

D. because the high-water mark (HWM) did not move due to the compact option that is used in the shrink operation

View the Exhibit and examine the steps that you executed to create a database resource plan.

Subsequently, you execute the following procedure which results in an error:

SQL> EXECUTE dbms_resources_manager.validate_pending_area ( );

What could be the reason?

A. The pending area is automatically submitted after the plan creation

B. The procedure must be executed before creating the resources plan directive

C. The SYS_GROUP resource consumer group is not included in the resource plan directive

D. The OTHER_GROUPS resources consumer group is not included in the resource plan directive

View Exhibit1 to examine the CRS11G disk group when all the disks are online. View Exhibit2 to examine

the CRS11G disk group when one disk is offline.

Why is the rebalancing not performed and the content of the disk group not empty in Exhibit2?

ASM-disk-group-1 (exhibit):

ASM-disk-group-2 (exhibit): A. Because the disk group is created with NORMAL redundancy

B. Because the disk repair time attribute is set to a nonzero value

C. Because the mirrored extents cannot be rebalanced across the other three disks

D. Because the other three disks have 60% free space, the disk rebalancing is delayed

You executed the following query:

SELECT oldest_flashback_scn, oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG; Considering that all the redo logs are available, what information can you derive from the output of the preceding query?

A. The time when the last flashback operation in your database was performed

B. The time when the first flashback operation in your database was performed

C. The approximate time and the lowest system change number (SCN) to which you can flash back your database

D. The system change number (SCN) and the time when the Flashback Database was enabled in the database instance