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Total 200 Questions | Updated On: Nov 18, 2024

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Question 1

You are successfully connected to your MySQL HeatWave DB system using MySQL Shell. Which command can you use to verify the connection and confirm you are accessing the HeatWave layer?

A : SHOW SCHEMAS; - This command lists all available schemas in the database.

B : SELECT * FROM SYS.STORAGE_POOL; - This command retrieves information about the HeatWave storage pool.

C : SHOW ENGINE; - This command displays the currently active storage engine, indicating HeatWave if connected correctly.

D : SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES; - This command counts the total number of tables in the database.

E : SHOW VARIABLES WHERE VARIABLE_NAME LIKE '%HEATWAVE%'; - This command displays all MySQL variables related to HeatWave settings.

Answer: C

Question 2

Your Bastion session is successfully established, but you encounter connection errors when trying to access the MySQL HeatWave DB system through the tunnel. What is a potential cause of this issue?

A : The security list attached to the Bastion instance doesn't allow outbound connections to the HeatWave DB system port.

B : The HeatWave DB system is running in a different Availability Domain than the Bastion instance.

C : The HeatWave DB system is not configured with the appropriate hostname or service name for the connection attempt.

D : The client application used to connect is incompatible with the MySQL HeatWave protocol.

E : The private subnet where the HeatWave DB system resides doesn't have a route to the Bastion instance subnet.

Answer: A

Question 3

You are experiencing slow query performance in your MySQL HeatWave service. You notice the hs_scan_batch_size dynamic variable is set to a low value. What impact will increasing this variable likely have?

A : Reduce memory usage within the HeatWave cluster

B : Decrease the overall number of database scans

C : Increase the number of rows processed per scan, potentially improving performance

D : Require a HeatWave service restart for the change to take effect

Answer: C

Question 4

You're setting up inbound replication from an on-premises MySQL database to your MySQL HeatWave service in OCI. Which connectivity option offers the highest security and reliability for data transfer?

A : Configure direct TCP/IP connection between the on-premises database and HeatWave service.

B : Utilize Oracle GoldenGate with Secure Sockets Layer (SSL) encryption for data replication.

C : Establish connection through OCI VPN Connect with IPSec tunnel encryption.

D : Implement Oracle Cloud Infrastructure Object Storage as an intermediate staging point for data.

Answer: B

Question 5

Your application is configured to connect to the primary instance of your MySQL HeatWave service. You want to switch to a read replica for read-heavy workloads. Which approach is recommended for minimizing application downtime during the switch?

A : Update the application's connection string directly to point to the read replica endpoint.

B : Modify the read replica load balancer configuration to route all traffic to the desired replica.

C : Implement a DNS failover mechanism to automatically switch to the read replica in case of the primary outage.

D : Use a database proxy with read replica awareness to transparently redirect read queries to the replica.

Answer: D

Page: 1 / 40

Total 200 Questions | Updated On: Nov 18, 2024

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