单项选择题

View the Exhibit and examine the recommendation graph provided for a test database by the Undo Advisor.The graph recommends that the size of undo tablespace should be set to（）.

A.1 MB
B.6 MB
C.10 MB
D.15 MB
E.11 MB

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单项选择题

The system was running a normal workload during the last 24 hours. You need to ensure that with the same workload you should be able to flashback tables by three hours. What would you do to find the system recommendations for the undo retention period and the undo tablespace size?（）

A.set DB_FLASHBACK_RETENTION_TARGET=10800
B.create a new scheduler window for the time period of 24 hours and use the optimizer statistics
C.modify the Automatic Workload Repository (AWR) snapshot time interval to three hours and use ADDMfindings
D.specify New Undo Retention as three hours and Analysis Time period as Last One Day in the Undo Advisor page and use its recommendations

多项选择题

Which are the three levels at which the Segment Advisor generates advice?（）

A.block level
B.object level
C.schema level
D.segment level
E.tablespace level

单项选择题

You have 100 segments in the USERS tablespace. You realize that the USERS tablespace is running low on space. You can use Segment Advisor to（）.

A.add data files to the tablespace
B.identify the segments that you should shrink
C.modify the storage parameters for the tablespace
D.automatically shrink the segments with unused space
E.check the alerts generated for the tablespace that is running low on space