Smartly Prepare Exam with Free Online 1Z0-084 Practice Test

We offer the latest 1Z0-084 practice test designed for free and effective online Oracle Database 19c: Performance Management and Tuning certification preparation. It's a simulation of the real 1Z0-084 exam experience, built to help you understand the structure, complexity, and topics you'll face on exam day.

Question 1

Which is the default memory management mode in Oracle Database 19c?

Options :

A : Automatic Shared Memory Management (ASMM)

B : Automatic Memory Management (AMM)

C : Manual Memory Management

D : Dynamic Memory Management

Answer: B

Question 2

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

Options :

A : Regularly rebuild all indexes to improve performance.

B : Use a higher PCTFREE value to reduce the frequency of index block splits.

C : Use index-organized tables (IOTs) for small lookup tables with few updates.

D : Create bitmap indexes on large tables with low cardinality columns.

Answer: C

Question 3

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 4

Which method should be used to diagnose and analyze the performance of an Oracle Database using the Automatic Database Diagnostic Monitor (ADDM)?

Options :

A : Query the V$ACTIVE_SESSION_HISTORY view

B : Query the V$SQL_MONITOR view

C : Use the SQL Tuning Advisor

D : Use the SQL Performance Analyzer

Answer: B

Question 5

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