Which two statements are true about the interpretation of Buffer Cache Hit Ratio in the Instance Efficiency
Percentages section of an AWR report? (Choose two.)
A.
A high value indicates that the buffer cache is adequately sized for the current workload.
B.
Poor hit ratios indicate that a large number of indexed lookups or small table scans are being performed.
C.
A low hit ratio does not necessarily imply that increasing the size of the buffer cache will improve
performance.
D.
A high hit ratio may indicate that repeated scanning of the same large table or index is being performed.
E.
A low hit ratio indicates that a KEEP buffer pool should be configured based on the size of the largest object
accessed in the buffer cache.