Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 1

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 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 2

Question 1
Question Type: MultipleChoice

Which aspect of NoSQL Database Cloud Service is LEAST impacted by the choice of SDK used in
an application?

Options:
A- Syntax for querying data.
B- Method for authenticating with the service.
C- Underlying database architecture and scalability characteristics.
D- Error handling mechanisms.

Answer:
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.

Oracle NoSQL Database SDK Documentation: SDK Usage and Best Practices
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 3

Question 2
Question Type: MultipleChoice

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?

Options:
A- Manually copying the data files from the HeatWave cluster's storage.
B- Using the OCI Object Storage service for storing manual database dumps.
C- Utilizing OCI Database backups, which include both the MySQL Database System and the
HeatWave cluster.
D- Relying solely on MySQL replication to another MySQL instance.
E- Using the MySQL Enterprise Backup tool directly on the HeatWave nodes.

Answer:
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.

Oracle MySQL HeatWave Documentation: Backup and Recovery

 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 4

Question 3
Question Type: MultipleChoice

Which data formats are directly supported by the HeatWave Lakehouse feature for querying data
in object storage?

Options:
A- Only CSV (Comma Separated Values) files.
B- Only Parquet files.
C- CSV, Parquet, and Avro files.
D- Only JSON files.
E- Only XML files.

Answer:
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.

 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 5

Oracle MySQL HeatWave Documentation: HeatWave Lakehouse Data Formats

Question 4
Question Type: MultipleChoice

When cloning a BaseDB database for development and testing, which of the following
considerations is MOST critical to ensure compliance with data privacy regulations?

Options:
A- Ensuring the compute shape of the cloned database is identical to the production database.
B- Masking or anonymizing sensitive data in the cloned database.
C- Using the same database version as the production database.
D- Maintaining the same network security group (NSG) rules as the production database.
E- Scheduling the cloning operation during off-peak hours.

Answer:
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.
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 6

E . Off-peak scheduling: Minimizes disruption but does not address data protection.

Oracle Database Security Documentation: Data Masking Techniques

Question 5
Question Type: MultipleChoice

In comparing NoSQL databases with relational databases, what constitutes a fundamental

difference in their approach to data relationships?

Options:
A- NoSQL databases universally lack the ability to represent relationships between data
elements.
B- Relational databases primarily rely on foreign keys to define relationships, while NoSQL
databases often embed related data within a single document or use application-level links.
C- NoSQL databases exclusively use foreign keys to establish relationships, similar to relational
database models.
D- Relational databases offer no mechanism for defining relationships between different data
sets.

Answer:
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
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 7

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.

Oracle NoSQL Database Documentation: Data Modeling and Relationships

Question 6
Question Type: MultipleChoice

Which two actions must you undertake when configuring the networking to provide network
connectivity for a MySQL HeatWave DB System instance?

Options:
A- Ensure the subnet used has a Service Gateway to Oracle Services, such as Object Storage, so
that patching can be applied.
B- Deploy the MySQL HeatWave DB System to a public subnet to allow external connectivity for
users.
C- Create ingress security rules in the VCN security list or Network Security Groups (NSGs) to
allow traffic to the MySQL HeatWave DB System.
D- Configure a dynamic routing gateway for inter-VCN connectivity.
E- Create egress security rules in the VCN security list or Network Security Groups (NSGs) to
block access from the MySQL HeatWave DB System to any outside network.

Answer:
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.
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 8

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.

Oracle MySQL HeatWave Documentation: Network Configuration Guidelines

Question 7
Question Type: MultipleChoice

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?

Options:
A- Traditional export/import using Data Pump over a public network.
B- Creating a physical standby database using Data Guard and switching over to the standby in
OCI.
C- Performing a full backup and restore to a new Exadata Database Service instance.
D- Using SQL Developer to copy the data over a VPN connection.

Answer:
B

Explanation:
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 9

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.

Oracle Data Guard Documentation: Minimal Downtime Migration

Question 8
Question Type: MultipleChoice

Which two actions can be performed using the Automatic Database Diagnostic Monitor (ADDM)
within Database Management to diagnose cloud database performance?

Options:
A- Generate recommendations for SQL plan baselines.
B- Automatically apply all ADDM recommendations to the database.
C- Identify root causes of performance bottlenecks, such as excessive I/O or CPU contention.
D- Automatically create indexes to improve query performance.

Answer:
A, C
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 10

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.

Oracle Database Management Documentation: ADDM Features

Question 9
Question Type: MultipleChoice

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?

Options:
A- GI and ASM patching is fully automated by Oracle Cloud Infrastructure and requires no user
intervention.
B- The DBA must manually download the GI and ASM patch bundles and apply them using the
appropriate patching tools.
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 11

C- GI and ASM patching is integrated with the database patching process and is automatically
handled when the database is patched.
D- Patching GI and ASM components is only required when the operating system of the VM is
upgraded.

Answer:
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.

Oracle Database Patching Documentation: User-Managed Patching Guide

Question 10
Question Type: MultipleChoice

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?
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 12

Options:
A- CPU utilization of the compute instances hosting the database.
B- Number of rejected read requests due to insufficient RCUs.
C- Number of rejected write requests due to insufficient WCUs.
D- Latency of read and write operations.

Answer:
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.

Oracle NoSQL Database Cloud Service Documentation: Autoscaling Throughput

Question 11
Question Type: MultipleChoice

Which of the following actions would typically require the highest level of IAM permissions on a
NoSQL table within Oracle NoSQL Database Cloud Service?
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 13

Options:
A- Performing a simple read operation on a single row.
B- Inserting a new row into the table.
C- Updating an existing row in the table.
D- Dropping the entire table.

Answer:
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.

Oracle NoSQL Database Cloud Service Documentation: IAM Permissions

Question 12
Question Type: MultipleChoice

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?

Options:
A- 'Cloud Tooling' offers significantly more granular control over the underlying hardware
configuration.
B- 'Cloud Tooling' automates the provisioning, patching, and lifecycle management of the
 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 14

Exadata infrastructure.
C- 'Cloud Tooling' completely eliminates the need for any database administrator intervention.
D- 'Cloud Tooling' allows using older versions of Oracle Database that are no longer supported
on-premises.

Answer:
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.

Oracle Exadata Cloud Service Documentation: Cloud Tooling Overview

 Sample Questions for Oracle 1Z0-1093-25 Exam By Fletcher - Page 15

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