【OCP 12c】OCP 062最新考试题库原题解析-第15题
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QUESTION 15
Which action takes place when a file checkpoint occurs?
A. The checkpoint position is advanced in t he checkpoint queue.
B. All buffers for a checkpointed file that were modified before a specific SCN are written to disk by DBWn and the SCN is stored in the control file.
C. The Database Writer process (DBWn) writes all dirty buffers in t he buffer cache to data files.
D. The Log Writer process (LGWR) writes all redo entries in t he log buffer to online redo log files.
Correct Answer: B
