Questions for the 1Z0-1093-25 were updated on : Dec 01 ,2025
Which aspect of NoSQL Database Cloud Service is LEAST impacted by the choice of SDK used in an
application?
C
Explanation:
C . Underlying database architecture and scalability characteristics:
The architecture and scalability of Oracle NoSQL Database Cloud Service are inherent to the platform
and do not change based on the SDK.
SDKs are designed to provide language-specific interfaces for data interaction but do not alter the
core architecture.
Whether using Java, Python, or another SDK, the database's sharding, replication, and consistency
characteristics remain constant.
Why the other options are impacted:
A . Query syntax: SDKs may offer different syntax or query formats.
B . Authentication method: Varies between SDKs, e.g., API keys vs. IAM tokens.
D . Error handling: Each SDK may implement error handling differently, influencing how exceptions
are processed.
Reference:
Oracle NoSQL Database SDK Documentation: SDK Usage and Best Practices
You need to implement a backup and recovery strategy for your MySQL HeatWave Database System.
What is the recommended method for backing up and restoring your HeatWave cluster?
C
Explanation:
C . Utilizing OCI Database backups:
Integrated with Oracle Cloud Infrastructure (OCI), providing consistent and complete backups.
Supports both the MySQL Database System and the HeatWave cluster, ensuring data integrity.
Automates backup scheduling and retention policies.
Facilitates easy restoration in case of data loss or corruption.
Why the other options are incorrect:
A . Manual copying: Prone to errors and lacks consistency.
B . Manual dumps to Object Storage: Labor-intensive and not automated.
D . MySQL replication: Suitable for high availability, but not a substitute for regular backups.
E . MySQL Enterprise Backup on nodes: Complex and not designed for HeatWave's distributed
environment.
Reference:
Oracle MySQL HeatWave Documentation: Backup and Recovery
Which data formats are directly supported by the HeatWave Lakehouse feature for querying data in
object storage?
C
Explanation:
C . CSV, Parquet, and Avro files:
HeatWave Lakehouse can directly query data stored in OCI Object Storage without loading it into
MySQL.
Supports widely-used data formats:
CSV (Comma Separated Values): Simple, text-based data format.
Parquet: Columnar storage format optimized for analytical queries.
Avro: Row-oriented format used for data serialization.
This versatility allows integrating data from various sources and querying directly.
Why the other options are incorrect:
A . Only CSV files: HeatWave supports more than just CSV.
B . Only Parquet files: HeatWave also supports CSV and Avro.
D . Only JSON files: JSON is not directly supported by HeatWave Lakehouse.
E . Only XML files: XML is not directly supported.
Reference:
Oracle MySQL HeatWave Documentation: HeatWave Lakehouse Data Formats
When cloning a BaseDB database for development and testing, which of the following considerations
is MOST critical to ensure compliance with data privacy regulations?
B
Explanation:
B . Masking or anonymizing sensitive data:
Data privacy regulations (like GDPR, HIPAA) mandate that personally identifiable information (PII) is
protected, even in non-production environments.
Cloning a database without masking sensitive data could expose confidential information to
unauthorized users.
Techniques include:
Data masking: Replacing real data with realistic, but non-sensitive values.
Data anonymization: Irreversibly removing personally identifiable information.
Why the other options are incorrect:
A . Matching compute shape: Relevant to performance, not privacy.
C . Using the same database version: Important for compatibility, but not related to data privacy.
D . Same NSG rules: Important for network security, but does not directly address data exposure.
E . Off-peak scheduling: Minimizes disruption but does not address data protection.
Reference:
Oracle Database Security Documentation: Data Masking Techniques
In comparing NoSQL databases with relational databases, what constitutes a fundamental difference
in their approach to data relationships?
B
Explanation:
B . Relational vs. NoSQL data relationships:
Relational Databases: Use foreign keys to establish relationships between tables, maintaining
referential integrity.
NoSQL Databases: Typically do not enforce relationships through foreign keys. Instead, they:
Embed related data within a single document (common in document stores like MongoDB).
Use application-level joins to link related data (common in key-value or column-family stores).
Graph databases (a type of NoSQL) use edges to explicitly represent relationships between nodes.
This difference highlights the flexibility vs. consistency trade-off between NoSQL and relational
databases.
Why the other options are incorrect:
A . NoSQL databases lack relationships: Incorrect; they handle relationships differently.
C . NoSQL using foreign keys exclusively: NoSQL databases generally do not enforce such
relationships.
D . Relational databases lack relationship mechanisms: Incorrect as relational databases are designed
around relationships.
Reference:
Oracle NoSQL Database Documentation: Data Modeling and Relationships
Which two actions must you undertake when configuring the networking to provide network
connectivity for a MySQL HeatWave DB System instance?
A, C
Explanation:
A . Service Gateway for Oracle Services:
Ensures the HeatWave DB System can access Oracle Services like Object Storage without using the
public internet.
Essential for tasks such as patching and backups.
C . Ingress security rules:
Allows necessary traffic to reach the HeatWave DB System.
Typically, rules will permit MySQL port (3306) and any application-specific ports.
Configured using VCN security lists or NSGs.
Why the other options are incorrect:
B . Public subnet deployment: Exposes the database to the internet, which is a security risk.
D . Dynamic routing gateway: Not mandatory unless inter-VCN connectivity is specifically required.
E . Blocking egress entirely: Restricting all outbound traffic can prevent necessary updates and
communication with Oracle services.
Reference:
Oracle MySQL HeatWave Documentation: Network Configuration Guidelines
Which of the following is the recommended approach for migrating a large, mission-critical database
from an on-premises Exadata system to Exadata Database Service with minimal downtime?
B
Explanation:
B . Using Data Guard for physical standby and switchover:
This method enables minimal downtime migration.
Steps:
Configure Data Guard to synchronize the standby database with the primary on-premises database.
Once synchronized, perform a switchover to make the standby the new primary.
Downtime is limited to the switchover duration.
This approach leverages real-time replication to minimize disruption.
Why the other options are incorrect:
A . Export/Import with Data Pump: Too time-consuming for large databases.
C . Full backup and restore: High downtime due to the time required for data transfer and
restoration.
D . Copying via SQL Developer: Not feasible for mission-critical and large databases due to slow
transfer speeds.
Reference:
Oracle Data Guard Documentation: Minimal Downtime Migration
Which two actions can be performed using the Automatic Database Diagnostic Monitor (ADDM)
within Database Management to diagnose cloud database performance?
A, C
Explanation:
A . Generate recommendations for SQL plan baselines:
ADDM analyzes historical data and SQL execution plans, suggesting baseline adjustments to optimize
performance.
Recommendations may include using an existing baseline or creating a new one.
C . Identify performance bottlenecks:
ADDM pinpoints issues related to:
I/O contention
CPU utilization
Memory bottlenecks
Locking issues
Helps DBAs understand which database components are causing slowdowns.
Why the other options are incorrect:
B . Automatically applying recommendations: ADDM only suggests actions; DBAs must manually
review and implement them.
D . Creating indexes: ADDM does not create indexes automatically; it may suggest them, but
implementation requires DBA action.
Reference:
Oracle Database Management Documentation: ADDM Features
Which statement accurately describes the patching process for Oracle Grid Infrastructure (GI) and
ASM components on a BaseDB VM system when using user-managed patching?
B
Explanation:
B . Manual patching for GI and ASM:
In a user-managed environment, the DBA is responsible for downloading and applying patches for
Grid Infrastructure (GI) and Automatic Storage Management (ASM).
These patches are distinct from database patches and need to be applied using tools like opatch or
Oracle Universal Installer (OUI).
The process involves:
Downloading the patch from Oracle Support.
Staging the patch on the server.
Applying the patch using the appropriate commands.
Why the other options are incorrect:
A . Fully automated by OCI: OCI does not automatically patch GI and ASM in user-managed
environments.
C . Integrated with database patching: GI and ASM patching is handled separately.
D . Required only during OS upgrade: Incorrect, as patching is required independently for security
and stability.
Reference:
Oracle Database Patching Documentation: User-Managed Patching Guide
When considering autoscaling for provisioned throughput in NoSQL Database Cloud Service, which
metric is LEAST relevant for determining when to scale up the capacity units?
A
Explanation:
A . CPU utilization of the compute instances hosting the database:
Autoscaling in NoSQL Database Cloud Service primarily focuses on RCUs (Read Capacity Units) and
WCUs (Write Capacity Units).
The objective is to dynamically adjust capacity based on query workload, not on CPU utilization.
Even if CPU usage is high, it might not necessarily indicate that the capacity units are inadequate.
Why the other options are more relevant:
B . Rejected read requests (RCUs): Direct indicator that read capacity is insufficient, requiring scaling.
C . Rejected write requests (WCUs): Indicates that the write throughput is inadequate, necessitating
scaling.
D . Latency of read and write operations: Increased latency often points to under-provisioned
throughput.
Reference:
Oracle NoSQL Database Cloud Service Documentation: Autoscaling Throughput
Which of the following actions would typically require the highest level of IAM permissions on a
NoSQL table within Oracle NoSQL Database Cloud Service?
D
Explanation:
D . Dropping the entire table:
Deleting a table is a destructive operation that permanently removes the data.
Requires the highest level of permissions due to the potential for data loss and disruption.
Usually restricted to administrators or highly privileged users.
Why the other options are incorrect:
A . Simple read operation: Basic permission, often granted to most users.
B . Inserting a row: Requires write permissions, but not as critical as table deletion.
C . Updating a row: Similar to insertion, modifies existing data but does not destroy the table.
Reference:
Oracle NoSQL Database Cloud Service Documentation: IAM Permissions
When deploying Exadata Database Service, what is the PRIMARY benefit of using the "Cloud Tooling"
deployment option versus manually configuring an on-premises Exadata system?
B
Explanation:
B . Automation of provisioning and management:
Cloud Tooling automates key tasks such as provisioning, patching, scaling, and maintenance.
Reduces manual configuration errors and saves time.
Ensures consistency in setup and updates, minimizing downtime.
Greatly simplifies lifecycle management, making cloud deployments more efficient than on-
premises.
Why the other options are incorrect:
A . More granular hardware control: Cloud tooling abstracts low-level hardware management.
C . No DBA intervention: While reduced, DBAs still handle application-specific configurations and
performance tuning.
D . Using older database versions: Exadata Cloud Service supports only supported versions, not
deprecated ones.
Reference:
Oracle Exadata Cloud Service Documentation: Cloud Tooling Overview
Oracle NoSQL Database Cloud Service supports operations on data based on keys. Which of the
following best describes how data is primarily accessed and retrieved within this model?
C
Explanation:
C . Accessing data using the unique key:
Oracle NoSQL Database Cloud Service follows a key-value data model.
Data is accessed directly using a unique key, which is highly efficient for lookups.
The value associated with the key can be simple or complex (e.g., JSON objects).
Provides fast read and write operations.
Why the other options are incorrect:
A . SQL with joins: Typical of relational databases, not NoSQL.
B . Graph traversal: Relevant to graph databases, not key-value stores.
D . Full-text indexing: Not the primary access method in key-value databases.
E . Predefined schema: NoSQL databases generally support schema-less data storage.
Reference:
Oracle NoSQL Database Cloud Service Documentation: Data Access
When a new security patch is released for the Oracle Database software on a BaseDB VM system,
what is the recommended approach for applying it in a production environment?
B
Explanation:
B . Testing patches in a non-production environment:
Critical to ensure that the patch does not introduce performance issues or compatibility problems.
Best Practice: Apply the patch to a staging environment that mirrors production, validate stability,
and then proceed to production.
Minimizes the risk of unplanned downtime or disruptions.
Why the other options are incorrect:
A . Immediate application in production: Risky as untested patches might cause outages.
C . Automatic patching by OCI: OCI does not automatically apply database patches; the customer
must manage this.
D . Patching the standby and failing over: While a good strategy when applicable, it still requires prior
testing.
Reference:
Oracle Database Patching Documentation: Patch Management Best Practices
Which two of the following statements are true regarding security considerations for managing
Exadata Cloud Infrastructure and VM Clusters?
B, E
Explanation:
B . Network Security Groups (NSGs) for traffic control:
NSGs allow customers to define ingress and egress rules to control network traffic.
Enhances security by restricting access to only authorized IP ranges and protocols.
Applied at the VM Cluster level to manage connectivity efficiently.
E . Responsibility for OS and database security:
While Oracle manages the infrastructure layer, customers are responsible for securing the operating
system and database within the VM Clusters.
This includes applying security patches, configuring firewalls, and implementing user access controls.
Why the other options are incorrect:
A . Host-based firewalls on Exadata Infrastructure: Oracle, not the customer, configures the
infrastructure-level security.
C . Oracle managing all security: Incorrect, as customers manage VM-level security.
D . Access to hypervisor: Customers do not have hypervisor-level access for security configuration.
Reference:
Oracle Exadata Cloud Infrastructure Documentation: Security Best Practices