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Question 1

Which of the following is the most efficient method to improve SQL performance?

Options :

A : Optimizing the table schema

B : Increasing the database buffer cache size

C : Enabling query result caching

D : Running the SQL Access Advisor

Answer: A

Question 2

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

Question 3

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 4

Which of the following options allows you to manage and control the execution plans used by the Oracle database optimizer?

Options :

A : Automatic Workload Repository (AWR)

B : SQL Performance Analyzer (SPA)

C : SQL Plan Management (SPM)

D : Automatic Database Diagnostic Monitor (ADDM)

Answer: C

Question 5

Which statement regarding SQL Plan Management (SPM) is true?

Options :

A :

SPM automatically creates and maintains execution plans for SQL statements.

B : SPM requires the OPTIMIZER_FEATURES_ENABLE initialization parameter to be set to the current Oracle Database release level.

C : SPM captures execution plans and uses them to compare with new plans generated for the same SQL statement.

D : SPM automatically updates execution plans based on changes in the database environment.

Answer: C