Your customer is operating a payment processing application on a Windows Server cluster
with the back-end Oracle databases running on Oracle Enterprise Linux (OEL). Both the
application and database environments have been presented storage from the customer’s
VNX solution. Your customer reports less than optimal performance for their online payment
processing application. While utilizing IOSTAT, utlbstat and utlestat, a high load on the buffer
cache and I/O system performance issues are found on the database servers. What is the
most likely problem?

A.
Redo logs are too small

B.
High Amounts of Recursive (SYS) SQL

C.
Long Full Table Scans

D.
Shortage of rollback segments