Question

An Oracle System Change Number (SCN):
A.is a value that is incremented whenever a dirty read occurs.
B.is incremented whenever a deadlock occurs.
C.is a value that keeps track of explicit locks.
D.is a value that is incremented whenever database changes are made.

Answer 1

hey mate........the answer is

D.is a value that is incremented whenever database changes are made.

Answer 2

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