You look at the Top 5 Timed Events section of the Automatic Workload Repository (AWR) report and find that the wait event buffer busy waits is consuming a significant portion of DB time.
What does this wait event indicate?
A.
buffer cache too small
B.
insufficient DBWn processes
C.
excessive block replacement
D.
a large number of locally-managed tablespaces in the database
E.
block contention on segment headers, data blocks, undo header, or undo blocks