Free Oracle 1z0-931-25 Practice Exam with Questions & Answers | Set: 3

Disabling Autonomous Data Guard affects the standby database:

Correct Answer (A): “The standby database is terminated” is true. When Data Guard is disabled via the OCI Console or API, the standby database is deleted, ending its role as a replica. This is a permanent action requiring re-enablement to recreate a standby.

Incorrect Options:

B: The standby doesn’t become read-write; it’s removed entirely.

C: It doesn’t remain read-only; termination stops all operations.

Configuring private endpoints for Autonomous Database involves network security rules. The false statement is:

A stateless ingress rule is created to allow connections from the source to the Autonomous Database instance (C):This is incorrect. For Autonomous Database private endpoints, security rules (e.g., in Security Lists or NSGs) must be stateful, not stateless. Stateful rules track connection states (e.g., allowing return traffic automatically), which is necessary for Oracle Net Services (SQL*Net) communication over TCP. A stateless rule requires explicit ingress and egress rules for both directions, complicating setup and risking connectivity issues. For example, a stateful ingress rule from a client subnet (e.g., 10.0.1.0/24) to the ADB subnet ensures bidirectional traffic works seamlessly without additional egress rules.

The true statements are:

The IP Protocol is set to TCP (A):Autonomous Database uses TCP for database connections, aligning with Oracle Net Services standards.

The destination port range is set to 1522 (B):Port 1522 is the default for secure TLS connections to Autonomous Database, as specified in the client wallet’s tnsnames.ora.

The source is set to the address range you want to allow to connect to your database (D):The security rule defines the source CIDR block (e.g., 10.0.0.0/16) of allowed clients, restricting access to specific subnets or VCNs.

Stateful rules simplify and secure private endpoint configurations.

Full Detailed In-Depth Explanation:

Bring Your Own License (BYOL) allows using existing on-premises Oracle licenses in the cloud:

A:False. Exadata is included in Autonomous Database; no separate license is needed.

B:False. Active Data Guard is an optional feature, not required for BYOL.

C:True. RAC is needed for BYOL when scaling beyond 16 OCPUs, as Autonomous Database uses RAC for high availability in larger deployments.

D:True. Multitenant is mandatory, as Autonomous Database uses a multitenant architecture (CDB/PDB).

E:False. TDE is included by default, not a BYOL requirement.

Compartment quotas in OCI control resource usage within compartments. The incorrect statement is:

Compartment quotas are set by Oracle (A):This is false. Compartment quotas are not set by Oracle; they are defined by OCI administrators using quota policies in the Identity and Access Management (IAM) system. Admins write policies (e.g., set database quota to 2 autonomous-databases in tenancy) to limit resources like Autonomous Databases percompartment, giving customers full control over resource allocation. Oracle provides the framework, but the specific quotas are user-defined, not Oracle-imposed.

The correct statements are:

Along with compartment budgets, compartment quotas create a powerful toolset to manage your spending (B):True. Quotas limit resource creation (e.g., max 5 ADBs), while budgets track spending (e.g., $1000/month), together offering comprehensive cost management. For example, a quota might cap ADB instances, and a budget alerts when costs approach a threshold.

There are three types of quota policy statements which are set, unset, and zero (C):True. SET assigns a quota (e.g., set compute quota to 10 instances), UNSET removes it, and ZERO sets it to none, effectively blocking resource creation. These verbs provide flexible quota management.

Compartment quotas use policies that allow allocation of resources with a high level of flexibility (D):True. Policies are written in OCI’s IAM syntax, allowing granular control (e.g., set database quota to 1 autonomous-database where target.compartment.id = 'ocid1.compartment...'), tailored to specific compartments or resources.

This customer-driven approach distinguishes quotas from Oracle-managed limits.

Data Insights is a feature in Autonomous Database that helps users understand their data. The false statement is:

Data Insights are automatically generated by various analytic functions built into the database (C):This is incorrect. Data Insights are not solely the result of automatic execution of built-in analytic functions (e.g., AVG, SUM, or RANK). Instead, they are generated through a combination of user-initiated analysis and Oracle’s machine learning-driven capabilities within the Data Insights dashboard (part of Database Actions or OCI console). Users select datasets or tables, and the system applies algorithms to identify patterns (e.g., trends in sales) or anomalies (e.g., outlier transactions), but this process isn’t just a passive outcome of pre-existing database functions—it’s an active, curated feature requiring configuration. For example, a user might explore a SALES table, and Data Insights highlights a spike in Q4 sales, but this requires user input to define scope, not just automatic function output.

The true statements are:

Data Insights display information about patterns and anomalies in the data of entities in your Oracle Autonomous Database (A):True. The feature visualizes trends (e.g., seasonal sales increases) and outliers (e.g., unexpected data drops) in tables or views, helping users spot significant data behaviors. For instance, it might show a bar chart of monthly revenue with an anomaly flagged for a sudden dip.

Data Insights provides a wide range of graphical data presentation capabilities (B):True. It offers visualizations like bar charts, line graphs, and scatter plots, customizable to represent data insights effectively. E.g., a line graph might track customer sign-ups over time, with options to adjust axes or filters.

The results of the Insight analysis appear as a series of bar charts in the Data Insights dashboard (D):True, partially. While bar charts are a common default (e.g., comparing sales by region), the dashboard supports multiple chart types, but the statement’s focus on bar charts aligns with typical output for simple insights.

The misconception in C overlooks the interactive, ML-assisted nature of Data Insights, distinguishing it from passive function-based analytics.

Oracle Autonomous Database on Dedicated Infrastructure enforces automatic maintenance to ensure security, stability, and performance. The correct answer is:

You cannot permanently disable scheduled Automatic Maintenance (C):Oracle mandates periodic maintenance updates (e.g., patching) to keep the database secure and compliant with the latest fixes. Customers can influence the timing of these updates but cannot disable them permanently. This is a design principle of the Autonomous Database service to reduce administrative overhead while maintaining system integrity.

The incorrect options are:

Change the Automatic Maintenance Schedule to 'No Preference' (A):This setting allows Oracle to determine the maintenance window but does not disable maintenance. It still occurs as scheduled by Oracle.

Change the Automatic Maintenance Schedule to 'None' (B):There is no 'None' option in the maintenance scheduling settings for Autonomous Dedicated Infrastructure. This is not a valid configuration.

Change the Automatic Maintenance Schedule to 'Specify a Schedule' but do not select any month, week, or day (D):This is not a functional workaround. Specifying a schedule requires selecting a valid time window, and leaving it blank does not prevent maintenance; it simply reverts to Oracle’s default scheduling.

Oracle’s documentation confirms that while customers can reschedule or skip specific maintenance runs (up to two consecutive quarters), permanently disabling automatic maintenance is not permitted to ensure the system remains up-to-date and secure.

Oracle recommends best practices for effective alarm management:

Correct Answer (A):Suppress alarms during investigationsprevents notification overload while troubleshooting, focusing attention on the issue.

Correct Answer (C):Select the correct alarm interval for your metricensures timely alerts without excessive noise (e.g., 1-minute intervals for critical metrics).

Correct Answer (D):Routinely tune your alarmsadjusts thresholds and settings to match workload changes, maintaining relevance.

Incorrect Option:

Full Detailed In-Depth Explanation:

Supported formats:

A:False. DDL is a language, not a data format.

B:True. AVRO is supported for structured data.

C:True. Parquet is optimized for analytics.

D:False. DOC is not supported.

E:True. JSON is flexible for semi-structured data.

F:True. CSV is widely used for tabular data.

Management operations for Autonomous Databases on Shared Exadata Infrastructure are limited due to its fully managed nature. The correct statement is:

You cannot configure the scheduling for your Autonomous Databases on Shared Exadata Infrastructure (C):In shared infrastructure, Oracle fully controls maintenance scheduling (e.g., patching, upgrades). Unlike dedicated infrastructure, where users can set maintenance windows, shared ADB users cannot adjust timing. Oracle notifies users of upcoming maintenance (e.g., via email or console), typically in a 7-day window, but the exact schedule is Oracle-driven to optimize the shared Exadata platform. For example, a quarterly patch might occur on a Tuesday at 2 AM UTC, and users must adapt, not reschedule.

The incorrect options are:

You can skip a scheduled maintenance run... (A):False. Shared infrastructure does not allow skipping maintenance runs, even for two quarters. This flexibility exists only in dedicated infrastructure, where users have more control (e.g., skipping up to two consecutive updates). In shared mode, Oracle enforces updates for security and stability across all tenants.

You can perform a "rolling restart"... (B):False. Rolling restarts (restarting nodes sequentially for availability) are not user-initiated in ADB shared infrastructure. Restarts, if needed, are managed by Oracle during maintenance, and users cannot control the process orensure node-by-node availability.

You can choose to use Release Update or Release Update Revision updates... (D):False. In shared infrastructure, Oracle applies Release Updates (RUs) uniformly across all databases; users cannot choose between RU or Release Update Revisions (RURs), a feature reserved for dedicated deployments.

This reflects the trade-off of shared infrastructure: lower cost and management effort for less control.

Full Detailed In-Depth Explanation:

A:False. APEX is for app development, not data exploration.

B:False. SQL Developer Web is for SQL queries, not pivot tables.

C:True. Business Models in ADW automates data exploration and generates pivot tables.

D:False. Data Load is for importing data, not analysis.