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2018年的时候,OCP 11g考试题库大更新,052 053出现了很多新题,
2019年,11g即将停考的前期,Oracle又出现了一次大变动,12c出现了很多新题,比如062 063题库大更新
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60题、choose one
When does a database checkpoint occur?
A) When there is an online redo log switch.
B) When the SHUTDOWN ABORT command is issued.
C) When a user session terminates abnormally.
D) When a server process terminates abnorthally.
Answer:A
(解析:日志切换时会发生检查点,目的是把记录在该日志中的事务造成的脏块写入数据文件。)