OCP 1Z0 052 65

65. Which two statements are true about checkpointing? (Choose two.)

A.The checkpoint frequency decreases with the smaller redo log file size.

B.It ensures that all committed data is written to the data files during normal shutdown.

C.The frequent full checkpoint in a database can cause the overall degradation of the database performance.

D.It prompts the Checkpoint (CKPT) process to write data to the data files and redo information to the

online redo log files.

Answer: BC

A、说反了。应该是 redo log file越小，checkpoint越频繁

D、CKPT does not write data blocks to data files or redo blocks to online redo log files.