单项选择题

Which of the following options describes Segment Shrink？（）

A. Reclaims space above and below the high-water mark without using additional space
B. Moves rows to a new physical location，resetting the high-water mark，but uses additional space during the operation
C. Deallocates space above the high-water mark that is currently not in use
D. None of the above

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单项选择题

Which of the following is a prerequisite for running DBMS_TDB.CHECK_DB to a successful completion？（）

A. The database must be in read-write mode.
B. The database must have no external files.
C. The database must open in read-only mode.
D. The database must be mounted but not opened.

多项选择题

Which of the following are prerequisite steps to transport a database？（）

A. Query the V$TRANSPORTABLE_PLATFORMS view in the source database to determine if the intended destination is listed.
B. Verify that there are no restrictions or limitations that the source or destination database may encounter.
C. Verify that the source and destination have the same Oracle version critical updates，patch-set version，and patch- set exceptions.
D. Determine if you will perform the conversion on the source or destination platform.
E. None of the above.

单项选择题

When exporting metadata for the transportable tablespaces， what is the correct next step after confirming endian format？（）

A. Export the tablespaces using data pump.
B. Determine if the transportable set is self-contained.
C. Convert the datafiles using RMAN.
D. Copy the datafiles from source to destination.