Online 1Z0-084 Practice Test

Question 1

What is the purpose of Automatic Workload Repository (AWR) in Oracle Database 19c performance tuning?

Options :

A : It provides real-time performance data that is used to proactively identify bottlenecks and service degradation.

B : It creates a baseline of performance statistics that can be used to compare with current performance data to help identify issues.

C : It allows for the automated collection and storage of performance data, which can be accessed through the Oracle Enterprise Manager.

D : It provides a graphical user interface that displays performance data in real-time and allows for real-time adjustments to system settings.

Answer: B

Question 2

Which of the following statements is true about the optimizer index skip scan feature in Oracle Database 19c?

Options :

A : The optimizer index skip scan feature allows the optimizer to skip over one or more leading columns of an index in order to improve query performance.

B : The optimizer index skip scan feature allows the optimizer to skip over only the first column of an index in order to improve query performance.

C : The optimizer index skip scan feature allows the optimizer to scan an index in reverse order, starting from the last column instead of the first column.

D : The optimizer index skip scan feature is not available in Oracle Database 19c.

Answer: A

Question 3

What is the purpose of SQL Tuning Advisor in Automatic Workload Repository (AWR)?

Options :

A : It provides recommendations for creating new indexes to improve query performance.

B : It analyzes high-load SQL and provides recommendations to improve their performance.

C : It recommends configuration changes to the database to improve overall performance.

D : It provides recommendations for configuring Automatic Memory Management (AMM).

Answer: B

Question 4

Which of the following can be a cause of excessive contention for a particular resource in an Oracle Database?

Options :

A : A large number of concurrent transactions attempting to access the resource

B : Inadequate system resources such as CPU, memory, or I/O bandwidth

C : A high volume of network traffic within the database

D : Insufficient database storage space

Answer: A

Question 5

Which of the following is considered a best practice for performance management and tuning in Oracle Database 19c?

Options :

A : Regularly gather optimizer statistics

B : Increase the size of the shared pool size

C : Disable Automatic Memory Management

D : Use a larger block size for all tablespaces

Answer: A

EXPERTY DESIGNED 1Z0-084 PRACTICE TEST