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Question :-

What is the preferred method for reclaiming unused storage in a DMS table space?
Perform an ALTER TABLESPACE...REDUCE operation.
Perform a REORG on each table within the table space, then perform an ALTER TABLESPACE...REDUCE operation.
Perform an ALTER TABLESPACE...LOWER HIGH WATER MARK operation, and then an ALTER TABLESPACE...REDUCE operation.
Perform a REORG on each table within the table space, then perform an ALTER TABLESPACE...LOWER HIGH WATER MARK operation.

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