The BOOKINGS table contains online booking information. When a booking is confirmed, the
details are transferred to an archival table BOOKINGS_HIST and deleted from the BOOKINGS
table. There is no fixed time interval between each online booking and its confirmation. Because
sufficient space is not always available from the delete operations the high-water mark (HWM) is
moved up and many rows are inserted below the HWM of the table. The BOOKINGS table has
Automatic Segment Space Management (ASSM) and row movement enabled. The table is
accessible in 24×7 mode.
What is the most efficient method to reclaim the space released by the delete operations in the
BOOKINGS table
A.
Perform EXPORT, DROP, and IMPORT operations on the BOOKINGS table sequentially
B.
Shrink the BOOKINGS table by using the ALTER TABLE… SHRINK SPACE command
C.
Move the BOOKINGS table to a different location by using the ALTER TABLE… MOVE
command
D.
Deallocate the space in the BOOKINGS table by using the ALTER TABLE … DEALLOCATE
UNUSED command