You are managing an online transaction processing (OLTP) system. Many users complain about the slow response time. You investigated and found that in the Top 5 events, direct path read accounts for 73.2% of the total wait time.
Which two are the possible reasons for the high direct path read time? (Choose two.)
A.
The I/O subsystem is slow.
B.
The SQL statements are using high CPU.
C.
The SQL statement has a long parsing time.
D.
The SQL statements are performing a large number of physical and logical reads.