【第60题】【062题库】2019年OCP认证062考试新题

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。来自3组：1015267481)