单选题How is block-change tracking enabled？（）A With alter database enable block change trackingB With alter system enable block change trackingC With an init.ora parameter changeD With an spfile parameter change
单选题
How is block-change tracking enabled？（）
A
With alter database enable block change tracking
B
With alter system enable block change tracking
C
With an init.ora parameter change
D
With an spfile parameter change
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