You find that in the Top 5 Timed Events section of the Automatic Workload Repository (AWR) report, the wait event buffer busy waits shows significantly high values.The database uses only non-ASSM locally managed tablespaces.On further investigation, you find that the contention is on data blocks.
Which option would you consider first to decrease the wait event values on a long-term basis?
A.
decreasing PCTUSED
B.
decreasing PCTFREE
C.
increasing the number of DBWn processes
D.
using automatic segment space management (ASSM)
E.
increasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation