多项选择题

Which three tasks can be performed using a duplicate database？（）

A. Testing the backup and recovery procedures
B. Testing the upgrade of an Oracle database to a new release
C. Testing the effect of an application changes on database performance
D. Continuously updating archive log files from the target database to support failover

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单项选择题

Examine the CREATE DISKGROUP command used to create a disk group：
SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY
DISK ’ORCL： FRA3’ NAME misc1， ’ORCL： FRA4’ NAME misc2；
In which situation would you use this method of disk group creation？（）

A. When two-way disk mirroring is required for the allocation units
B. When three-way disk mirroring is required for the allocation units
C. When using hardware mirroring or RAID
D. When disk mirroring is required for the Automatic Storage Management （ASM） disks

多项选择题

Which two statements are true about a job chain？（）

A. A job chain can contain a nested chain of jobs
B. The jobs in a job chain cannot have more than one dependency
C. A job of the CHAIN type can be run using event-based or time-based schedules
D. The jobs in a job chain can be executed only by using the events generated by the Scheduler

单项选择题

View the Exhibit and examine the disk groups created at the time of migrating the database storage to Automatic Storage Management （ASM）.
Why does the FRA disk group initially have more free space even though both DATA and FRA disk groups are provided with the same size？（）

A. Because the FRA disk group will not support dynamic rebalancing
B. Because the FRA disk group is not configured to support mirroring
C. Because disks in the FRA disk group are not formatted at this stage
D. Because the FRA disk group will support only a single size of allocation unit