Oracle Oracle Cloud Database Services 2025 Professional 1z0-1093-25 Exam Dumps: Updated Questions & Answers (December 2025)

B. Recommendations for parameter tuning:

Database Management analyzes historical performance data and provides tuning recommendations.

These recommendations align with Oracle best practices to optimize database performance.

C. Comparison of parameter settings:

The service allows users to compare parameter configurations between different databases or across time points for a single database.

This is useful for identifying changes or discrepancies that could impact performance.

Why the other options are incorrect:

A. Automatic correction of parameters:Database Management does not automatically correct parameters; changes require manual intervention.

D. Lack of parameter management:Incorrect statement, as the service does offer parameter management features.

OCI Console:

The Oracle Cloud Infrastructure Console is the primary graphical interface for creating and managingMySQL HeatWave Database Service Systems. It provides a user-friendly environment for configuring database instances and integrating HeatWave.

OCI CLI:

The OCI Command Line Interface allows for automation and scripting of database service creation. It is useful when managing multiple instances or performing bulk operations.

Why the other options are incorrect:

C:OCI Bastion Server is used for secure SSH access, not for database creation.

D:MySQL Shell is a client tool for interacting with databases, not for provisioning them.

E:OCI SQL Developer is a database management tool, not a service provisioning tool.

Reasoning:

TheDatabase Management Servicecan collect performance metrics from databases across different regions within the same OCI tenancy. Therefore, the geographic location of the service relative to the database isnot a common issue.

More Likely Causes:

A:IAM policies that do not grant sufficient permissions are a common issue.

B:If the database is offline, no metrics can be collected.

D:A locked database user account used by the Management Agent will prevent data collection.

Why C is incorrect:

The Database Management Service can be configured to collect metrics from databasesacross regions, as long as network access and permissions are properly configured.

HeatWave's Processing Model:

HeatWave usescolumnar in-memory processingto optimize analytical workloads. Storing data in columns rather than rows allows HeatWave toprocess large datasets efficiently, reducing the volume of data scanned and improving query performance. This is crucial for OLAP operations that involveaggregating and analyzing data.

Why the other options are incorrect:

A:Row-based processing is typical for OLTP workloads, not analytical.

B:HeatWave operates primarily in memory, not disk.

D:Indexing enhances performance but is not the primary processing paradigm.

E:Key-value processing is typical in NoSQL databases, not analytical systems.

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.

C. Partitioning and replication of data across multiple nodes:

NoSQL databases typically prioritizehorizontal scalabilityby distributing data across multiple nodes.

Replicationensures data availability even if one node fails.

This approach leads toeventual consistencyrather than strict ACID compliance.

The system can continue to operate despite some nodes being offline, maintaining high availability.

Why the other options are incorrect:

A. Complex joins and transactions:Typical of relational databases prioritizing consistency.

B. Strict referential integrity:More common in SQL databases requiring ACID transactions.

D. Centralized architecture:Opposite of scalable, distributed NoSQL models.

Rate Limiting in NoSQL:

In Oracle NoSQL Database Cloud Service, rate limiting primarily controlsread and write throughput. This means defining themaximum number of read and write operations per secondthat a table can handle.

The goal is toprevent a single table from consuming excessive resources, ensuringfair allocationand system stability.

Why the other options are incorrect:

A:Storage capacity is managed via quotas, not rate limits.

C:CPU and memory are related to system resources, not table operations.

D:Indexing and query complexity are managed differently, often via query optimization.

C. MySQL Shell Upgrade Checker Utility:

The utility analyzes MySQL instances for compatibility with newer versions, such as MySQL 8.0 used by HeatWave.

It checks for:

Syntax differences

Data type mismatches

Deprecated features

The tool outputs a report highlighting issues that may impact migration to HeatWave.

Why the other options are incorrect:

A. MySQL Enterprise Monitor:Focuses on monitoring performance, not compatibility.

B. Oracle SQL Developer:Primarily used for database development, not upgrade checks.

D. Oracle Cloud Advisor:Provides cloud optimization recommendations, not MySQL compatibility checks.

E. MySQL Workbench:A visual tool for database design and administration, not specifically for upgrade assessment.

Scaling Out:

Scaling out in Exadata means increasing thenumber of database server VMs and storage serversto handle a larger workload. This is achieved byadding more compute nodesand storage cells, allowing the system todistribute database processingacross multiple nodes.

This horizontal scalability is ideal for environments with fluctuating workloads or growing data volumes. It improvesquery performance and fault tolerancesince data and workload are distributed across more hardware resources.

Why the other options are incorrect:

A:Increasing CPU cores within a single VM is consideredscaling up.

C:Upgrading the database software version is unrelated to scaling.

D:Increasing RAM is also a form of scaling up, not scaling out.

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.