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Oracle Database 12c Advance Adminstration1z0-063 Test 3

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Which three statements are true about compression of backup sets? (Choose three.)

Compressed backups can only be written to media.
Binary compression creates performance overhead during a backup operation.
Unused blocks below the high-water mark are not backed up.
Compressed backups cannot have section size defined during a backup operation
It works only for locally managed tablespaces.

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