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

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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

单项选择题

You have 100 segments in the USERS tablespace. You get an alert that the USERS tablespace is running low on space. You decide to shrink some segments. Which option would you use to determine which segments to shrink?（）

A.Segment Advisor
B.SQL Tuning Advisor
C.SQL Access Advisor
D.Segment Resource Estimation
E.Automatic Database Diagnostic Monitor (ADDM)

单项选择题

You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）

A.The data in the segment will be compacted but the high water mark will not be adjusted
B.The EMPLOYEES table will be changed to read-only mode during the shrink operation
C.The indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over
D.The shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation
E.Data manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation

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