You notice that two wait events, Latch:cache buffer chains and Latch:cache buffer LRU chains, appear consistently in the Top 5 Timed Events for your database.
Which two options describe what these wait events indicate? (Choose two.)
A.
Latch:cache buffer LRU chains – indicates excessive block replacement
B.
Latch:cache buffer LRU chains – indicates insufficient size of application cursor cache
C.
Latch:cache buffer chains – indicates inefficient SQL that accesses many blocks repeatedly
D.
Latch:cache buffer chains – indicates that there are several sessions waiting for a buffer that is presently being read into the buffer cache by another session