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Q21 Multiple choice

You have been asked to create a mobile application which will be used for submitting orders by users of a popular E-Commerce site. The application is built to work with Autonomous Transaction Processing -
Serverless (ATP-S) database as the backend and HTML5 on Oracle Application Express as the front end.
During the peak usage of the application you notice that the application response time is very slow. ATP-S database is deployed with 3 CPU cores and 1 TB of memory.

Which two options are expensive or impractical ways to improve the application response times?

Select all that apply.

A
Identify the maximum memory capacity needed for peak times and scale the memory for the ATP- S database to that number. ATP-S will scale the memory down when not needed.
B
Use the Machine Learning (ML) feature of the ATP-S database iteratively to tune the SQL queries used by the application.
C
Scale up CPU core count and memory during peak times.
D
Enable auto scaling for CPU cores on ATP-S database.
E
Identify the maximum CPU capacity needed for peak times and scale the CPU core count for the ATP-
S database to that number. ATP-S will scale the CPU core count down when not needed.

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