Question 1

Which of the following best describes the purpose of the buffer cache in Oracle Database?

Options :

A : To store copies of data blocks read from disk, reducing disk IO

B : To store the SQL statements executed by the database, optimizing query performance

C : To store copies of frequently accessed tables and indexes, improving response time

D : To store metadata about the database objects, facilitating efficient data access

Answer: A

Question 2

Which of the following statements best describes the function of the Automatic Workload Repository (AWR)?

Options :

A : The AWR collects and stores performance data for analyzing database activity and diagnosing performance issues.

B : The AWR is a tool for managing and tuning the automatic memory management feature of Oracle Database.

C : The AWR provides a graphical interface for monitoring and managing database performance metrics.

D : The AWR is a feature that allows the automatic creation and maintenance of database indexes.

Answer: A

Question 3

What is the purpose of the ASM Fast Mirror Resync (FMR) feature?

Options :

A : Rolling out new Oracle Database 19c patches with zero-downtime

B : Rapidly resyncing changed extents to a new disk after a disk failure

C : Dynamically reconfiguring ASM disks online without needing to take the disk group offline

D : Accelerating the rebalancing process during disk group rebalancing

Answer: B

Question 4

Which of the following options can be used to improve SQL performance?

Options :

A : Creating an index on all columns used in WHERE and JOIN clauses

B : Increasing the size of the Oracle buffer cache

C : Using bind variables instead of literals

D : Enabling the FORCE MATCHING option in SQL plan management

Answer: C

Question 5

What is a benefit of using Real Application Testing with Oracle Database 19c?

Options :

A : It allows you to test the impact of system changes on database performance before implementing them in production.

B : It automatically tunes the database based on workload patterns.

C : It provides real-time monitoring of database performance.

D : It enables automatic database backups and recovery.

Answer: A