1z0-1093-25 Exam Dumps - Oracle Cloud Database Services 2025 Professional

A. MySQL Query Optimizer:

TheMySQL Query Optimizerdetermines whether a query can benefit from HeatWave’s in-memory, columnar processing.

If a query is deemed suitable, it is automatically offloaded to the HeatWave cluster.

This process significantly improves the execution speed of complex analytical queries.

Why the other options are incorrect:

B. HeatWave AutoPilot:Manages workload optimization but does not directly offload queries.

C. MySQL Router:Manages connection routing, not query offloading.

D. MySQL Shell:Primarily used for administrative tasks, not query optimization.

E. OCI Load Balancer:Manages network traffic distribution, unrelated to database query processing.

VCN Requirement (B):

AVirtual Cloud Network (VCN)with appropriate subnets is essential to providenetwork connectivity and isolationfor the HeatWave DB system. It ensures secure data flow within the Oracle Cloud Infrastructure.

License Requirement (E):

Since HeatWave is anenterprise feature, it requires aMySQL Enterprise Edition license.Without this license, the HeatWave functionalities cannot be utilized.

Why the other options are incorrect:

A:Data loading can be performed post-provisioning.

C:While encryption can be configured, it is not a prerequisite.

D:An OCI Compute instance may be used as a client but is not mandatory for provisioning.

B:Database Management directly queries the database to gather performance data, such as SQL performance and active session history. It also integrates with OCI Monitoring for infrastructure-level metrics like CPU, memory, and storage utilization.

C:Database Management can function independently of OCI Monitoring since it has its own data collection mechanisms.

Why the other options are incorrect:

A:Database Management does not rely solely on OCI Monitoring.

D:It does not require custom metrics from the user.

A:Exadata VM Clusters can be managed independently from the Exadata Infrastructure. This means you can start or stop the cluster without affecting the infrastructure, which provides flexibility for maintenance and performance tuning.

E:The VM Cluster can be terminated without impacting the Exadata Infrastructure. This feature is useful when you want to reassign the infrastructure resources to a new or different cluster.

Why the other options are incorrect:

B:While some adjustments might not need a reboot, core count scaling often requires restarting.

C:Patching the infrastructure and the VM Cluster are separate processes.

D:Changing the infrastructure shape does not automatically adjust VM Cluster resources. Manual reconfiguration is needed.

Exception Handling in SDKs:

When developing applications using theOracle NoSQL Database Cloud Service SDK, it is essential to implementerror handling logic. This typically includes managing cases like:

Record Not Found:Handling situations where a queried record does not exist.

Insufficient Capacity:Managing requests when throughput limits are exceeded.

Network Failures:Retrying operations or providing fallback mechanisms.The goal is to buildrobust and resilient applicationsthat gracefully handle unexpected conditions.

Why the other options are incorrect:

A:Cloud infrastructure handles hardware recovery, not the SDK.

B:While retrying may ensure consistency, it is the developer’s responsibility to implement it.

C:Performance metrics are gathered via monitoring tools, not exception handling.