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Oracle Autonomous Database Cloud 2025 Professional Sample Questions (Q40-Q45):
NEW QUESTION # 40
Which Autonomous Database Cloud Service ignores hints in SQL statements by default?
- A. Autonomous Data Warehouse
- B. Autonomous Transaction Processing
- C. Both services ignore hints by default
- D. Neither service ignores hints by default
Answer: A
Explanation:
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.
NEW QUESTION # 41
Which statement is FALSE regarding provisioning an Autonomous Database and configuring private endpoints with security rules to allow incoming and outgoing traffic to and from the Autonomous Database instance?
- A. A stateless ingress rule is created to allow connections from the source to the Autonomous Database instance
- B. The source is set to the address range you want to allow to connect to your database
- C. The IP Protocol is set to TCP
- D. The destination port range is set to 1522
Answer: A
Explanation:
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.
NEW QUESTION # 42
Which statement is FALSE about setting up compartment quotas?
- A. Compartment quotas cannot be set on the root compartment.
- B. Quotas set on a parent compartment override quotas set on child compartments.
- C. You cannot manage quotas in a compartment unless you belong to a group that has the correct permissions.
- D. Compartment quotas use policies that allow allocation of resources with a high level of flexibility.
Answer: A
Explanation:
Compartment quotas in Oracle Cloud Infrastructure (OCI) manage resource allocation:
Correct Answer (D): "Compartment quotas cannot be set on the root compartment" is false. Quotas can be applied to any compartment, including the root compartment, to limit resource usage tenancy-wide. While direct quotas on the root are less common (child compartment quotas are typically used), it's technically possible via OCI policies.
True Statements:
A: Quotas offer flexible resource limits (e.g., OCPUs, storage) via policy statements.
B: Parent compartment quotas take precedence over child quotas, enforcing hierarchical control.
C: Managing quotas requires appropriate IAM permissions (e.g., manage quotas), ensuring security.
This flexibility supports granular resource management across the tenancy.
NEW QUESTION # 43
Your company has a .NET application and wants to deploy it on Autonomous Database (ADB). What software is used to connect to ADB from the .NET application?
- A. SQL*Plus
- B. Oracle Data Access Components for Windows
- C. Java
- D. You cannot use .NET with ADB
Answer: B
Explanation:
Connecting a .NET application to Autonomous Database (ADB) requires a specific client library compatible with Oracle's database connectivity standards. The correct software is:
Oracle Data Access Components for Windows (D): Oracle Data Access Components (ODAC) for Windows is the recommended software for .NET applications to connect to ADB. ODAC includes the Oracle Data Provider for .NET (ODP.NET), which supports ADO.NET interfaces for database access. It enables .NET developers to use familiar APIs (e.g., OracleConnection, OracleCommand) to interact with ADB over Oracle Net Services, leveraging the secure TLS connection required by ADB (via the client wallet). For example, a .NET app might use ODAC to execute SELECT * FROM customers against an ADB instance, authenticating with a wallet downloaded from the OCI console. ODAC supports both managed and unmanaged modes: the managed ODP.NET is lightweight and assembly-based, while the unmanaged version integrates with Oracle Client libraries. To set it up, developers install ODAC (e.g., via NuGet or Oracle's download site), configure the wallet (e.g., tnsnames.ora), and write code like:
csharp
CollapseWrapCopy
using Oracle.ManagedDataAccess.Client;
string connString = "User Id=USER1;Password=pwd;Data Source=adb_high";
using (OracleConnection conn = new OracleConnection(connString)) {
conn.Open();
// Query execution here
}
This ensures seamless integration with ADB's managed environment, supporting features like connection pooling and high performance.
The incorrect options are:
SQL*Plus (A): SQL*Plus is a command-line tool for SQL execution and administration, not a programmatic library for .NET applications. It's unsuitable for embedding in a .NET app, as it lacks API integration and is meant for manual use (e.g., running scripts like SELECT * FROM table;).
You cannot use .NET with ADB (B): This is false. .NET is fully supported via ODAC, allowing applications (e.g., ASP.NET web apps or Windows services) to connect to ADB just like any Oracle database, provided the wallet and credentials are configured.
Java (C): Java uses JDBC (e.g., Oracle JDBC Driver) for database connectivity, not .NET. While JDBC works with ADB for Java apps, it's irrelevant for a .NET environment, where ODAC is the standard.
ODAC's robust support for .NET makes it the definitive choice, bridging Microsoft's ecosystem with Oracle's cloud database.
NEW QUESTION # 44
Who, and in which order, provisions dedicated Exadata Infrastructure resources?
- A. The Fleet Administrator provisions the Autonomous Exadata Infrastructure. Then, the Database Administrator provisions the Autonomous Container DB and then the Autonomous DB
- B. The Fleet Administrator provisions the Autonomous Exadata Infrastructure and then the Autonomous Container DB and then, the Database Administrator provisions the Autonomous DB
- C. The Database Administrator provisions the Autonomous Exadata Infrastructure. Then, the Fleet Administrator provisions the Autonomous Container DB and then the Autonomous DB
- D. The Database Administrator provisions the Autonomous Container DB and the Autonomous DB. Then, the Fleet Administrator provisions the Autonomous Exadata Infrastructure
Answer: B
Explanation:
Provisioning dedicated Exadata Infrastructure resources for Autonomous Database follows a strict hierarchical order, reflecting roles and dependencies. The correct sequence is:
The Fleet Administrator provisions the Autonomous Exadata Infrastructure and then the Autonomous Container DB and then, the Database Administrator provisions the Autonomous DB (A):
Fleet Administrator provisions Autonomous Exadata Infrastructure (AEI): The Fleet Admin, responsible for infrastructure management, starts by provisioning the AEI via the OCI console (e.g., "Create Autonomous Exadata Infrastructure"). This sets up the physical Exadata hardware, networking (e.g., VCN, subnets), and initial configuration (e.g., 2 racks, 4 nodes). For example, they might specify a compartment and region (e.g., us-ashburn-1), taking 1-2 hours for provisioning.
Fleet Administrator provisions Autonomous Container DB (ACD): Within the AEI, the Fleet Admin creates the ACD (e.g., "Create Autonomous Container Database"), a lightweight container hosting multiple ADBs. They set parameters like version (e.g., 19c) and maintenance windows (e.g., Sundays 02:00 UTC), ensuring the container is ready. This step might take 15-30 minutes.
Database Administrator provisions Autonomous DB (ADB): Finally, the DBA provisions individual ADBs within the ACD (e.g., "Create Autonomous Database"), choosing workload type (ATP/ADW), OCPUs (e.g., 4), and storage (e.g., 1 TB). For instance, they might create an ATP instance named PRODDB for a transactional app, completing setup in 5-10 minutes.
The incorrect options are:
B: The DBA can't provision the ACD or ADB before the AEI exists, as the infrastructure is foundational. The Fleet Admin must act first.
C: The DBA doesn't provision AEI-that's an infrastructure task beyond their scope. The Fleet Admin handles hardware setup.
D: The DBA can't provision the ACD; that's a Fleet Admin task within the AEI. Roles are distinct: Fleet Admin for infra, DBA for databases.
This order ensures proper infrastructure setup before database creation, aligning with OCI's role-based workflow.
NEW QUESTION # 45
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