單項(xiàng)選擇題

The instance abnormally terminates because of a power outage. Which statement is true about redolog files during instance recovery（）

A.Inactive and current redo log files are required to accomplish recovery.
B.Online and archived redo log files are required to accomplish instance recovery.
C.All redo log entries after the last checkpoint are applied from redo log files to data files.
D.All redo log entries recorded in the current redo log file until the checkpoint position are applied to datafiles.

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多項(xiàng)選擇題

You notice that the performance of the database has degraded because of frequent checkpoints. Which two actions resolve the issue（）

A.Disable automatic checkpoint tuning.
B.Check the size of the redo log file size and increase the size if it is small.
C.Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor.
D.Decrease the number of redo log members if there are more than one redo log members available in each redo log group.

多項(xiàng)選擇題

Which two statements are true about checkpointing（）

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.

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The instance abnormally terminates because of a power outage. Which statement is true about redolog files during instance recovery（）

你可能感興趣的試題

You notice that the performance of the database has degraded because of frequent checkpoints. Which two actions resolve the issue（）

Which two statements are true about checkpointing（）