Oracle 1z0-931-25 - Oracle Autonomous Database Cloud 2025 Professional

Full Detailed In-Depth Explanation:

When restoring or cloning an Autonomous Database (ADB), Oracle enforces a minimum backup age to ensure data consistency and integrity. The official Oracle documentation specifies that backups used for these operations must be at least24 hours old. This requirement exists because:

Backups need time to complete and stabilize, ensuring all transactions are fully committed and the backup is consistent.

Recent backups (e.g., less than 24 hours old) may still be in progress or lack full verification, risking incomplete or corrupted restores/clones.

Options B (5 minutes), C (2 hours), and D (1 day) are either too short or redundant:

5 minutesand2 hours: Too recent, violating the 24-hour rule.

1 day: Matches 24 hours but is less precise than the explicit “24 hours” phrasing in the documentation.

For the Business Analyst’s exploration, they can access tools like SQL Developer Web or Data Load via the OCI Console under the “Tools” tab, but this question focuses on the backup age constraint, making A the best answer.

Oracle Autonomous Container Database (ACD) provides specific options for managing quarterly maintenance updates to ensure minimal disruption and flexibility. The three correct operations available are:

Reschedule and patch immediately (B):This option allows users to adjust the maintenance window to a more convenient time and apply the patch right away within that rescheduled window. It’s useful when the default schedule conflicts with business operations but immediate patching is still desired.

Reschedule patching (C):This option enables users to defer the patching to a later maintenance window that suits their operational needs, providing flexibility without applying the patch immediately.

Skip patching (D):Users can choose to skip a quarterly maintenance update entirely, which is beneficial if the current database version is stable and no immediate updates are required. Oracle allows skipping up to two consecutive quarterly updates for Autonomous Container Databases on dedicated infrastructure.

The incorrect options are:

Patch immediately (A):This is not a standalone option for quarterly updates on ACDs. Patching occurs within scheduled maintenance windows, and immediate patching outside of rescheduling is not supported as a distinct choice.

Apply a partial patch (E):Oracle does not support applying partial patches during quarterly maintenance updates. Updates are delivered as complete bundles to ensure consistency and security.

This aligns with Oracle’s maintenance policies for Autonomous Databases on dedicated infrastructure, where control over scheduling and skipping is provided, but partial patching is not an option.

The Catalog tool in Autonomous Database provides metadata exploration:

Correct Answer (A): “You can delete an entity from the Autonomous Database via the Catalog tool” isfalse. The Catalog is a read-only interface for viewing database objects (tables, views, etc.) and their relationships; it does not support modification or deletion actions.

True Statements:

B: Filtering by name, schema, type, or application is a core search feature.

C: Viewing DDL (data definition language) for entities is supported.

Full Detailed In-Depth Explanation:

Oracle Autonomous Database offers two primary services: Autonomous Data Warehouse (ADW) and Autonomous Transaction Processing (ATP), each optimized for different workloads. SQL hints are directives embedded in SQL statements to influence the optimizer’s execution plan. However, their handling differs between the services:

Autonomous Data Warehouse (ADW):ADW is designed for analytical workloads and data warehousing, where query performance is critical. To ensure optimal execution, ADW’s optimizer relies heavily on its own statistics and algorithms, ignoring SQL hints by default. This behavior prevents user-provided hints from overriding the automated optimization strategies tailored for complex analytical queries.

Autonomous Transaction Processing (ATP):ATP targets transactional workloads (OLTP) and provides more flexibility. It does not ignore hints by default, allowing developers and DBAs to use hints to fine-tune query execution plans for specific transactional needs.

Thus, only ADW ignores hints by default, making option C the correct answer. Options A and B are incorrect because ATP does not share ADW’s default behavior, and option D incorrectly identifies ATP as the service that ignores hints.

Oracle Data Safe enhances database security across various Oracle environments. The false statement is:

Oracle Data Safe only supports Autonomous Database (D):This is incorrect. Oracle Data Safe supports a wide range of Oracle databases, not just Autonomous Database. It works with Autonomous Database (shared and dedicated), Oracle Database Cloud Service (VM and Bare Metal), Exadata DB Systems, on-premises Oracle Databases, and Oracle Database on OCI Compute. For example, a DBA could use Data Safe to mask sensitive data in an on-premises 19c database or assess security in an Exadata Cloud@Customer deployment, not just ADB. This broad compatibility makes it a unified security tool across Oracle’s ecosystem.

The true statements are:

Oracle Data Safe helps you find sensitive data in your database by inspecting the actual data in your database and its data dictionary (A):Data Safe’s Data Discovery feature scans tables and metadata to identify sensitive columns (e.g., SSNs, credit card numbers), using predefined and custom patterns.

Oracle Data Safe helps you assess the security of your cloud database configurations by analyzing database configurations (B):The Security Assessment feature evaluates settings like encryption, auditing, and privileges, providing risk scores and recommendations.

Oracle Data Safe evaluates user types, how users are authenticated, and the password policies assigned to each user (C):User Assessment analyzes user accounts, authentication methods (e.g., password, SSO), and policies, highlighting risks like weak passwords.

The misconception in D limits Data Safe’s scope, which extends beyond ADB to all supported Oracle databases.

In Oracle Cloud Infrastructure (OCI), the Notifications service is used to send messages (e.g., via email, SMS, or HTTP endpoints) to subscribers. The correct terminology for the communication channel is:

Topic (C):A "topic" in OCI Notifications is the named entity that acts as a communication channel. Publishers send messages to a topic, and subscribers (e.g., email addresses, SMS numbers, or custom endpoints) receive those messages based on their subscription to that topic. For example, you might create a topic called "DatabaseAlerts" to send notifications about database events. When a message is published to this topic, all subscribed endpoints (e.g., an email like user@example.com) receive it. This design follows a publish-subscribe (pub/sub) model, making "topic" the central concept for message distribution.

The incorrect options are:

Subject (A):The "subject" is a field within a message (e.g., the subject line of an email), not the channel itself. It describes the content of an individual notification but doesn’t define the mechanism for sending it. For instance, an email notification might have a subject like "Database Maintenance Scheduled," but the topic is the channel delivering it.

Notification (B):A "notification" refers to the actual message being sent (the payload), not the channel through which it travels. It’s the output of the process, not the infrastructure enabling it. For example, a notification might be "Database is down," but it’s sent via a topic.

Event (D):An "event" is an occurrence or trigger (e.g., a database failover) that might generate a notification, but it’s not the channel. Events are inputs that can be monitored by services like OCI Events, which then publish to a topic in Notifications.

The use of "topic" aligns with OCI’s architecture for scalable, decoupled messaging. To illustrate, you’d create a topic in the OCI console under "Notifications," configure subscriptions (e.g., email or SMS), and then use APIs or triggers to publish messages to it. This abstraction ensures flexibility and reliability in message delivery across various protocols.

Autonomous Database on Dedicated Infrastructure offers unique features:

Correct Answer (A): “Users are offered greater control and isolation starting at the Exadata Cloud Infrastructure level” highlights dedicated hardware (compute, storage, network), ensuring isolation and performance not available in shared setups.

Correct Answer (E): “Users have more control over the maintenance schedule” allows scheduling maintenance windows, unlike shared infrastructure’s fixed schedules.

Incorrect Options:

B: OS customization is not allowed; Oracle manages the stack fully.

C: No OS access is provided; it’s a managed service.

Full Detailed In-Depth Explanation:

A:True. Data Insights works with tables and business models in ADW.

B:False. Exclusive to Autonomous Database, not on-premises.

C:True. Search history is retrievable.

D:False. Included in ADW, not separately priced.

Creating an Autonomous Database (ADB) via OCI’s REST API involves a specific endpoint. The correct command is:

POST /20160918/autonomousDatabases (D):This is the official REST API endpoint to create an ADB instance. The POST request to /20160918/autonomousDatabases (versioned at API 20160918) submits a JSON payload defining the database (e.g., compartment, name, workload type). Example:

curl -X POST "https://database.us-ashburn-1.oraclecloud.com/20160918/autonomousDatabases" \

-H "Authorization: Bearer " \

-H "Content-Type: application/json" \

-d '{

"compartmentId": "ocid1.compartment.oc1..example",

"dbName": "MYADB",

"cpuCoreCount": 1,

"dataStorageSizeInTBs": 1,

"dbWorkload": "OLTP",

"adminPassword": "Secure#123"

}'

This creates an ATP instance named MYADB with 1 OCPU and 1 TB storage. The response includes an OCID (e.g., ocid1.autonomousdatabase.oc1..example), and provisioning starts asynchronously, visible in the OCI console as “PROVISIONING.” The endpoint’s plural form (autonomousDatabases) reflects the resource collection, consistent with OCI API conventions.

The incorrect options are:

POST /20160918/createADB (A):No such endpoint exists. OCI APIs use resource-based paths (e.g., /autonomousDatabases), not action-specific ones like createADB.

POST /20160918/createautonomousDatabases (B):Incorrect syntax—APIs don’t prepend “create” to resource paths, and “autonomousDatabases” is lowercase here, matching the real endpoint.

POST /20160918/createDatabases (C):Too generic; it doesn’t specify “autonomous” databases, and no such endpoint exists for ADB creation.

This REST command is a programmatic alternative to console-based provisioning, ideal for automation.

Cloning from a backup in Autonomous Database has a minimum age requirement:

Correct Answer (A): The earliest timestamp allowed is2 hoursafter the backup is created. This ensures data consistency by allowing time for any in-flight transactions or writes to stabilize in the backup, preventing incomplete or corrupted clones.

Incorrect Options:

B: 24 hours is the default retention period, not the minimum cloning age.