Free Oracle 1Z0-931-25 Test Practice Test Questions Exam Dumps
Prepare Top Oracle 1Z0-931-25 Exam Audio Study Guide Practice Questions Edition
Oracle 1Z0-931-25 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
| Topic 5 |
|
NEW QUESTION # 75
Which four file formats are supported when loading data from Cloud Storage?
- A. CSV
- B. AVRO
- C. DDL
- D. Parquet
- E. DOC
- F. JSON
Answer: A,B,D,F
Explanation:
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.
NEW QUESTION # 76
Which three operations are available for a quarterly maintenance update on Autonomous Container Database? (Choose three.)
- A. Reschedule and patch immediately
- B. Apply a partial patch
- C. Reschedule patching
- D. Patch immediately
- E. Skip patching
Answer: A,C,E
Explanation:
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.
NEW QUESTION # 77
Which three statements are true about procedures in the DBMS_CLOUD package?
- A. The DBMS_CLOUD.VALIDATE_EXTERNAL_TABLE validates the source file for an external table, generates log information, and stores the rows that do not match the format options specified for the external table in a bad file table in Autonomous Data Warehouse.
- B. The DBMS_CLOUD.CREATE_EXTERNAL_TABLE procedure creates an external table on files in the cloud. You can run queries on external data from the Autonomous Data Warehouse.
- C. The DBMS_CLOUD.PUT_OBJECT procedure copies a file from cloud object storage to the Autonomous Data Warehouse.
- D. The DBMS_CLOUD.DELETE_FILE procedure removes the credential file from the Autonomous Data Warehouse.
- E. The DBMS_CLOUD.CREATE_CREDENTIAL procedure stores cloud object credentials in the Autonomous Data Warehouse.
Answer: A,B,E
Explanation:
Full Detailed In-Depth Explanation:
The DBMS_CLOUD package facilitates cloud integration:
A: True. CREATE_EXTERNAL_TABLE creates external tables for querying cloud data directly.
B: False. No DELETE_FILE procedure exists; credential management uses DROP_CREDENTIAL.
C: True. CREATE_CREDENTIAL securely stores cloud storage credentials.
D: True. VALIDATE_EXTERNAL_TABLE checks file integrity and logs errors.
E: False. PUT_OBJECT uploads files to cloud storage, not into the database.
NEW QUESTION # 78
Which tab in the Data Load Explore tool shows the size of the table and the number of rows and columns?
- A. Data Sources tab
- B. Statistics tab
- C. Hierarchies tab
- D. Measures tab
Answer: B
Explanation:
The Data Load Explore tool in Autonomous Database helps users analyze loaded data. The correct tab is:
Statistics tab (B): The Statistics tab displays detailed metadata about a table, including its size (e.g., in MB or GB), number of rows, and number of columns. For example, after loading a CSV into a table SALES, this tab might show "Rows: 10,000, Columns: 5, Size: 2.3 MB," providing a quick overview of the dataset's scale and structure. It's designed for understanding data volume and composition, aiding decisions like partitioning or indexing.
The incorrect options are:
Hierarchies tab (A): This tab shows hierarchical relationships in the data (e.g., parent-child links), not basic table metrics like size or row count. It's more about data organization than statistics.
Data Sources tab (C): This tab lists the sources of loaded data (e.g., OCI Object Storage buckets or files), not the resulting table's properties. It focuses on origin, not metrics.
Measures tab (D): The Measures tab defines numerical aggregates (e.g., sum of sales), used for analytics, not raw table statistics like row or column counts.
The Statistics tab is the go-to for table sizing details in Data Load Explore.
NEW QUESTION # 79
Which two license types does the customer need to benefit from BYOL when leveraging on-premise Enterprise Database licenses in Oracle Autonomous Database?
- A. Transparent Data Encryption (TDE)
- B. Multitenant
- C. Active Data Guard
- D. Real Application Clusters (RAC), but only when scaling beyond 16 OCPUs
- E. Exadata
Answer: B,D
Explanation:
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.
NEW QUESTION # 80
When working with an Autonomous Exadata Infrastructure supporting Autonomous Databases, where do you go to view the maintenance history of the Exadata?
- A. Under Database then Autonomous Transaction Processing then Autonomous Exadata
- B. Under Core Infrastructure then Compute then Autonomous Exadata
- C. Under Core Infrastructure then Autonomous Exadata
- D. Under Solutions and Platforms then Platform Services then Autonomous Exadata
Answer: D
Explanation:
Viewing the maintenance history of Autonomous Exadata Infrastructure (AEI) requires navigating the OCI console correctly. The correct path is:
Under Solutions and Platforms then Platform Services then Autonomous Exadata (C): In the OCI console, AEI is categorized under "Solutions and Platforms" (a section for integrated services), then "Platform Services" (covering cloud platform offerings), and finally "Autonomous Exadata." Here, you select your AEI instance (e.g., by name or OCID), and the details page displays a "Maintenance History" section listing past events (e.g., patching dates, durations, and statuses like "Completed on 2025-03-01"). For example, a quarterly RU applied on January 15 might show "Patch Applied: RU 23.1" with start/end times. This path reflects AEI's role as a dedicated platform supporting Autonomous Container Databases (ACDs) and Autonomous Databases (ADBs).
The incorrect options are:
Under Core Infrastructure then Compute then Autonomous Exadata (A): "Core Infrastructure" > "Compute" is for virtual machines or bare metal hosts, not Exadata infrastructure. AEI isn't a compute instance; it's a database platform.
Under Database then Autonomous Transaction Processing then Autonomous Exadata (B): "Database" > "Autonomous Transaction Processing" focuses on ATP instances, not the underlying Exadata infrastructure. AEI maintenance is separate from specific ADB types.
Under Core Infrastructure then Autonomous Exadata (D): "Core Infrastructure" doesn't directly list AEI; it's too broad and lacks the "Platform Services" context needed for Exadata-specific management.
This navigation ensures you access AEI-specific maintenance details efficiently.
NEW QUESTION # 81
Which statement is true when connecting an OCI Marketplace image to a shared Autonomous Database?
- A. Compute Image and Shared ADB must be in the same VCN and Subnet
- B. Cannot connect OCI Marketplace image to shared ADB
- C. ADB must be configured with NSG
- D. ADB must be configured with Private endpoints
Answer: A
Explanation:
Connecting an OCI Marketplace image (e.g., a compute instance running a preconfigured application) to a shared Autonomous Database (ADB) involves network configuration. The correct statement is:
Compute Image and Shared ADB must be in the same VCN and Subnet (A): For a compute instance from the OCI Marketplace to communicate with a shared Autonomous Database, both must reside in the same Virtual Cloud Network (VCN) and subnet. This ensures direct network connectivity without requiring complex routing or public internet traversal. By default, shared ADB instances use private endpoints within a VCN, and placing the compute instance in the same subnet allows seamless access using the database's private IP address. For example, if the ADB is in subnet 10.0.1.0/24, the compute instance must also be in that subnet to connect via Oracle Net Services (e.g., using a wallet and tnsnames.ora).
The incorrect options are:
ADB must be configured with Private endpoints (B): While shared ADB instances are configured with private endpoints by default (not publicly accessible), this is not a configurable option you "must" set-it's inherent to shared infrastructure. Thus, it's not a requirement you actively enforce for this scenario; it's already true.
ADB must be configured with NSG (C): Network Security Groups (NSGs) are optional for controlling traffic to an ADB. You can use NSGs for finer-grained security, but they are not mandatory; Security Lists at the subnet level can suffice. Hence, this is not a universal requirement for connectivity.
Cannot connect OCI Marketplace image to shared ADB (D): This is false. OCI Marketplace images (e.g., a web server or analytics tool) can connect to a shared ADB, provided network and authentication prerequisites (like same VCN/subnet and client credentials) are met.
This requirement simplifies network setup and enhances security by keeping communication internal to the VCN. For instance, a Marketplace image like a web application could query an ADB in the same subnet using JDBC or ODBC, leveraging the private endpoint.
NEW QUESTION # 82
Which predefined service connection should you use when running lots of high concurrent queries in an Autonomous Database?
- A. DBNAME_LOW
- B. DBNAME_MEDIUM
- C. DBNAME_HIGH
- D. DBNAME_CONCURRENT
Answer: A
Explanation:
Full Detailed In-Depth Explanation:
Service connections in Autonomous Database:
A . DBNAME_LOW: Optimized for high concurrency with minimal resources per query, ideal for many simultaneous queries.
B . DBNAME_MEDIUM: Balanced concurrency and performance.
C . DBNAME_HIGH: Prioritizes individual query performance, not concurrency.
D . DBNAME_CONCURRENT: Not a valid service name.
NEW QUESTION # 83
What are two differentiators of Oracle Autonomous Database on Dedicated Infrastructure? (Choose two.)
- A. Users have OS access to the database machine.
- B. Users are offered greater control and isolation starting at the Exadata Cloud Infrastructure level.
- C. Users have more control over the maintenance schedule.
- D. Users have SYS privileges in the database.
- E. Users can customize the OS stack and add additional packages.
Answer: B,C
Explanation:
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.
D: SYS privileges are not unique to dedicated infrastructure; they depend on user roles, not deployment type.
These differentiators enhance control and isolation for enterprise needs.
NEW QUESTION # 84
Which three advanced options can you enable or disable while creating a business model? (Choose three.)
- A. Analytic View Base Table Query Transformation
- B. Display private tables
- C. Business Object Security Feature
- D. Autonomous Aggregate Cache
- E. Analytic View Transparency View
Answer: A,D,E
Explanation:
When creating a business model in Autonomous Database (e.g., via Data Modeler), advanced options enhance analytical capabilities:
Correct Answer (A): Autonomous Aggregate Cache uses dimensional metadata to manage caching, improving query performance.
Correct Answer (B): Analytic View Transparency View exposes analytic views as standard views for compatibility with existing tools.
Correct Answer (C): Analytic View Base Table Query Transformation enables seamless integration of analytic views into existing reports.
Incorrect Options:
D: "Display private tables" is not a recognized advanced option in this context.
E: "Business Object Security Feature" is unrelated to Autonomous Database business modeling.
These options optimize analytical workloads.
NEW QUESTION # 85
What are three characteristics of Data Lake data captured in Object Storage? (Choose three.)
- A. High transaction performance
- B. Mixed data types
- C. Schema on read
- D. Multiple subject areas
- E. High concurrency
Answer: B,C,D
Explanation:
Data Lakes in OCI Object Storage store raw data for analysis. The three correct characteristics are:
Schema on read (C): Data Lakes store data in its raw, native format (e.g., JSON, CSV, Parquet) without a predefined schema. The schema is applied when data is read or processed, not when written, offering flexibility. For example, a Parquet file with sales data might be queried with SQL only when analyzed, not structured upfront like in a database.
Multiple subject areas (D): Data Lakes aggregate data from diverse sources-sales, HR, IoT-spanning multiple subject areas. This enables cross-domain analysis, like combining customer data with weather data for insights, all stored in a single OCI bucket.
Mixed data types (E): Data Lakes support varied formats: structured (e.g., CSV tables), semi-structured (e.g., JSON documents), and unstructured (e.g., videos). For instance, a bucket might hold CSV logs, JSON events, and image files, all accessible for processing.
The incorrect options are:
High concurrency (A): Data Lakes in Object Storage are not designed for high-concurrency transactional access (e.g., thousands of simultaneous updates). They're optimized for batch processing or analytics, unlike ATP's concurrency focus.
High transaction performance (B): Transactional performance (e.g., fast commits) is a database strength, not a Data Lake's. Object Storage prioritizes scalability and durability over transactional speed, making it unsuitable for OLTP workloads.
These traits make Data Lakes ideal for big data analytics, not real-time transactions.
NEW QUESTION # 86
Which three security features are available in Oracle Autonomous Database Shared Infrastructure? (Choose three.)
- A. Data Redaction
- B. Transparent Data Encryption
- C. Audit Vault
- D. Database Vault
- E. Customer Managed Keys
Answer: B,D,E
Explanation:
Oracle Autonomous Database Shared Infrastructure offers built-in security features to protect data and ensure compliance. The three correct features are:
Customer Managed Keys (A): This feature allows customers to use their own encryption keys for Transparent Data Encryption (TDE), stored in Oracle Key Vault or OCI Vault. It gives control over key management, enhancing security by ensuring only the customer can decrypt data. For example, a company might generate a key in OCI Vault, link it to their ADB, and rotate it periodically, all managed outside Oracle's default keys.
Database Vault (D): Oracle Database Vault enforces fine-grained access controls, preventing unauthorized access to sensitive data even by privileged users (e.g., DBAs). In ADB shared infrastructure, it's available to restrict operations like SELECT on specific schemas, adding a layer of protection against internal threats. For instance, it could block an admin from viewing customer PII unless explicitly permitted.
Transparent Data Encryption (E): TDE is enabled by default in Autonomous Database, encrypting data at rest (e.g., in tablespaces, backups, and logs) using AES-256. This ensures that if physical storage is compromised, the data remains unreadable without the encryption key. Customers can opt for customer-managed keys (A) or use Oracle-managed keys, but TDE itself is always active.
The incorrect options are:
Audit Vault (B): Oracle Audit Vault is a separate product for centralized audit log management, not a built-in feature of ADB shared infrastructure. While ADB performs auditing, it doesn't include Audit Vault's advanced capabilities natively.
Data Redaction (C): Data Redaction (masking sensitive data in query results) is available in on-premises Oracle Database Enterprise Edition but is not supported in Autonomous Database shared infrastructure. ADB's managed nature limits such custom configurations, relying instead on TDE and Database Vault for security.
These features collectively ensure robust security with minimal customer effort in a shared environment.
NEW QUESTION # 87
What is the default time range in Performance Hub?
- A. 1 Week
- B. 1 Hour
- C. 15 Minutes
- D. 24 Hours
Answer: D
Explanation:
Performance Hub in Autonomous Database provides performance monitoring insights. The correct answer is:
24 Hours (C): When you open Performance Hub in the OCI console or Database Actions, the default time range displayed is the last 24 hours, shown in Coordinated Universal Time (UTC). This allows users to review recent performance metrics like CPU usage, SQL activity, and wait times. Users can adjust this range (e.g., to 1 hour or 1 week) as needed.
The incorrect options are:
15 Minutes (A): This is not a default option; it's too short for a broad performance overview.
1 Hour (B): Available as an option, but not the default setting.
1 Week (D): Also available, but not the default; it's a longer-term view users can select manually.
The 24-hour default balances recency and context for performance analysis.
NEW QUESTION # 88
You have a requirement to create an Autonomous Transaction Processing database that can support at least 200 concurrent statements per OCPU as well as parallelism. Which service will you need to connect to?
- A. TPURGENT
- B. MEDIUM
- C. TP
- D. LOW
Answer: A
Explanation:
Full Detailed In-Depth Explanation:
Autonomous Transaction Processing (ATP) offers predefined service levels with varying concurrency and parallelism capabilities:
MEDIUM: Supports up to 50 concurrent statements per OCPU, with no parallelism by default. Unsuitable for the requirement.
TPURGENT: Supports up to 200 concurrent statements per OCPU and enables manual parallelism. This meets both requirements (concurrency ≥ 200 and parallelism), making it the correct choice.
LOW: Supports only 25 concurrent statements per OCPU, with no parallelism. Insufficient for the requirement.
TP: Supports 125 concurrent statements per OCPU, with no parallelism by default. Falls short of the 200 concurrency threshold.
TPURGENT is designed for high-concurrency, time-sensitive workloads, providing the necessary resources and flexibility for parallel query execution, aligning perfectly with the specified needs.
NEW QUESTION # 89
You are the admin user of an Autonomous Database (ADB) instance. A new business analyst has joined the team and would like to explore ADB tables using SQL Developer Web. What steps do you need to take?
- A. Create an IDCS user, create a database user with connect, resource, and object privileges
- B. Create a database user with the default privileges
- C. Create a database user (with connect, resource, object privileges), enable the schema to use SQL Developer Web, and provide the user with the user-specific modified URL
- D. Create a database user with connect, resource, and object privileges
Answer: C
Explanation:
Enabling a new business analyst to use SQL Developer Web with Autonomous Database requires specific steps. The correct answer is:
Create a database user (with connect, resource, object privileges), enable the schema to use SQL Developer Web, and provide the user with the user-specific modified URL (C):
Create a database user: As the ADMIN user, create a new database user (e.g., ANALYST1) with CONNECT (to log in), RESOURCE (to create objects), and object-specific privileges (e.g., SELECT on target tables). Example: CREATE USER ANALYST1 IDENTIFIED BY "password"; GRANT CONNECT, RESOURCE TO ANALYST1; GRANT SELECT ON HR.EMPLOYEES TO ANALYST1;. This ensures the analyst can access and query tables.
Enable the schema for SQL Developer Web: Use the ORDS_ADMIN.ENABLE_SCHEMA procedure to activate the schema for web access. Example: EXEC ORDS_ADMIN.ENABLE_SCHEMA(p_schema => 'ANALYST1');. This step integrates the user with Oracle REST Data Services (ORDS), which powers SQL Developer Web in ADB.
Provide the user-specific URL: After enabling the schema, generate and share the SQL Developer Web URL, which includes the user's credentials (e.g., https://<adb-host>/ords/analyst1/_sdw). The analyst logs in with their database username and password, accessing a browser-based SQL interface to explore tables.
The incorrect options are:
Create a database user with connect, resource, and object privileges (A): This alone isn't enough; without enabling the schema for SQL Developer Web, the user can't access it via the web interface.
Create a database user with the default privileges (B): Default privileges (e.g., just CONNECT) are insufficient for table access or web use; specific grants and ORDS setup are needed.
Create an IDCS user, create a database user with connect, resource, and object privileges (D): Oracle Identity Cloud Service (IDCS) integration is optional and not required for basic SQL Developer Web access in ADB. It's overkill unless SSO is mandated, which isn't specified here.
This multi-step process ensures secure, web-based access tailored to the analyst's needs.
NEW QUESTION # 90
Which are two available options when creating an Autonomous Database? (Choose two.)
- A. APEX Service on Dedicated Infrastructure
- B. Autonomous JSON Database on Shared Infrastructure
- C. APEX Service on Shared Infrastructure
- D. Autonomous JSON Database on Dedicated Infrastructure
Answer: A,B
Explanation:
Creating an Autonomous Database offers specific deployment options. The two correct ones are:
APEX Service on Dedicated Infrastructure (A): This option provisions an Autonomous Database on dedicated Exadata infrastructure with Oracle Application Express (APEX) pre-installed and optimized. It's ideal for APEX-based apps (e.g., custom web forms) requiring isolated resources. In the OCI console, you select "Dedicated Infrastructure" and "APEX Service" as the workload type, specifying OCPUs and storage. For example, a company might deploy an APEX app for internal reporting on a dedicated ACD, ensuring performance isolation from other tenants.
Autonomous JSON Database on Shared Infrastructure (C): This creates a schema-less, JSON-centric ADB on shared infrastructure, optimized for document storage (e.g., { "order_id": 123, "items": [...] }). It's provisioned via the OCI console under "Shared Infrastructure," selecting "JSON Database" as the workload type. For instance, a mobile app might use it to store user data, leveraging SQL/JSON queries like SELECT JSON_VALUE(doc, '$.order_id'). It's cost-effective and fully managed, sharing Exadata resources.
The incorrect options are:
APEX Service on Shared Infrastructure (B): There's no distinct "APEX Service" workload type on shared infrastructure. APEX is available within ATP or ADW on shared infra, but it's not a standalone option-you'd provision ATP and enable APEX manually, not as a dedicated "APEX Service." Autonomous JSON Database on Dedicated Infrastructure (D): JSON Database is only offered on shared infrastructure, not dedicated. Dedicated options include ATP, ADW, and APEX Service, but JSON Database leverages shared resources for simplicity and cost.
These options cater to specific app development (APEX) and NoSQL (JSON) needs.
NEW QUESTION # 91
How do you change the tablespace quota for user MTHEO on an Autonomous Database on Shared Infrastructure?
- A. Execute ALTER TABLESPACE DATA SET QUOTA = 10G;
- B. Execute ALTER DATABASE FOR USER MTHEO TABLESPACE DATA QUOTA = 10G;
- C. Execute ALTER USER MTHEO QUOTA UNLIMITED ON TABLESPACE DATA;
- D. Execute DBMS_CLOUD_ADMIN.GRANT_TABLESPACE_QUOTA(username => 'MTHEO', tablespace_quota => 'UNLIMITED');
Answer: C
Explanation:
Full Detailed In-Depth Explanation:
In Autonomous Database on Shared Infrastructure, tablespace quotas are managed using standard SQL commands, as administrative packages like DBMS_CLOUD_ADMIN are restricted in this environment. The correct method is:
ALTER USER MTHEO QUOTA UNLIMITED ON TABLESPACE DATA: This command directly modifies the user's quota on the DATA tablespace, which is the default tablespace in Autonomous Database. "UNLIMITED" removes any storage restrictions.
Analysis of options:
A: Incorrect. DBMS_CLOUD_ADMIN is used in dedicated infrastructure for advanced administrative tasks, not shared infrastructure for quota changes.
B: Correct. This is the standard SQL syntax supported in shared infrastructure.
C: Incorrect. ALTER TABLESPACE modifies tablespace properties, not user quotas, and isn't applicable here.
D: Incorrect. ALTER DATABASE syntax is invalid for user quotas; it's for database-wide settings.
NEW QUESTION # 92
......
Go to 1Z0-931-25 Questions - Try 1Z0-931-25 dumps pdf: https://passleader.examtorrent.com/1Z0-931-25-prep4sure-dumps.html
