（单选题）
What purpose would you achieve by enabling the block change tracking feature？（）
A Eliminate the necessity for backups.
B Perform optimized image copy backups.
C Perform optimized incremental backups.
D Enable checkpoint （CKPT） to perform checkpointing at every block change.
E Enable database writer （DBWn） to write changed blocks to data files faster.
正确答案
答案解析
略
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