Question 1

Which of the following techniques is most effective for improving query performance in an Oracle database?

Options :

A : Using optimizer hints

B : Increasing the SGA size

C : Adding more indexes to the tables

D : Rewriting the SQL queries

Answer: B

Question 2

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 3

Which statement about Undo and Redo Management is correct?

Options :

A : The UNDO_RETENTION parameter determines the minimum amount of time that undo data will be retained in the undo tablespace.

B :

The MAXTRANS parameter determines the maximum number of transactions that can be concurrently active on a given data block.

C : The UNDO_TABLESPACE parameter specifies the name of the default tablespace used for storing undo data.

D : The LOG_BUFFER parameter determines the size of the redo log buffer in memory.

Answer: A

Question 4

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

Options :

A : To monitor the performance of the database, store a history of system activity, and identify potential performance issues for further analysis

B : To perform backups and recovery of the database and ensure data consistency

C : To manage users, roles, and privileges for accessing the database

D : To automate routine administrative tasks, such as space and memory management

Answer: A

Question 5

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

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