Q83. Which two are true about instance recovery?
Q83. Which two are true about instance recovery?
- A. It is not possible if an archived log is missing.
- B. It is performed automatically while the database remains in MOUNT state. Then the database is opened.
- C. Setting FAST_START_MTTR_TARGET to a higher value reduces instance recovery time by causing the log writer to write more frequently, thereby reducing the number of I/Os needed during instance recovery.
- D. It is performed by the Recovery Writer (RVWR) background process.
- E. It is performed automatically after the database is opened; however, blocks requiring recovery are not available until they are recovered.
- F. Setting FAST_START_MTTR_TARGET to a lower value reduces instance recovery time by causing dirty buffers to be written to disk more frequently, thereby reducing the number of I/Os needed during instance recovery.
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