Oracle Updated 1z0-931-25 Exam Questions and Answers by dawud

Autonomous Transaction Processing (ATP) provides predefined connection services to optimize different workload types. For a high-concurrency OLTP application with parallel reporting queries, the appropriate service is:

HIGH (C):The HIGH connection service in ATP is designed for workloads requiring high concurrency and throughput, making it ideal for a production OLTP application like "EXAM" that handles many simultaneous transactions (e.g., user requests). Additionally, HIGH supports parallel query execution, which is critical for running reporting queries efficiently during off-peak times. It allocates more resources (e.g., OCPUs and I/O) compared to other services, ensuring performance for both transactional and analytical tasks. For example, the OLTP app might use HIGH to process thousands of concurrent user requests, while a nightly report leverages parallel processing to aggregate data quickly. In the wallet’s tnsnames.ora, the HIGH service might look like exam_high = (DESCRIPTION=...), offering the best balance for this mixed workload.

The incorrect options are:

TPURGENT (A):The TPURGENT service prioritizes low-latency, time-critical transactions (e.g., sub-second response times for single-user actions). It’s optimized for latency-sensitive operations, not high concurrency or parallel reporting, and would underperform for the broader OLTP and reporting needs here. For instance, it’s better suited for a single critical transaction than a multi-user system.

TP (B):The TP (Transaction Processing) service is a general-purpose option for OLTP workloads, offering moderate concurrency and latency. However, it’s not optimized for high concurrency or parallel query execution, making it less suitable for a production app with reporting demands. It’s a middle ground, not a top-tier performer like HIGH.

MEDIUM (D):The MEDIUM service balances performance and resource usage for moderate workloads. It supports some concurrency but lacks the resource allocation and parallel execution capabilities of HIGH, making it inadequate for a high-concurrency OLTP system with reporting requirements.

The HIGH service’s ability to handle both high transactional volume and parallel reporting aligns perfectly with the scenario’s strict performance needs, all within ATP’s zero-maintenance framework.

Cloning in Autonomous Database creates a new instance from an existing source:

Correct Answer (A): “A clone database source can be a running database instance” is true. You can clone from a live, running Autonomous Database instance (full clone), capturing its current state, including data and configuration, without needing to stop it.

Incorrect Options:

B: There are multiple cloning types: full clone (from a running instance) and refreshable clone (a read-only copy that syncs with the source), plus cloning from backups.

C: Cloning from a backup requires the backup to be at least 2 hours old for consistency, not less, making this false.

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.

Downloading Autonomous Database credentials (client wallet) is necessary for secure connections. The two correct actions are:

Find the service console for your Autonomous Database, then pick administration, then download the credential wallet (B):In the OCI console, navigate to the Autonomous Database service console (e.g., via the “Database” section). Select your ADB instance, go to the “Administration” tab, and click “Download Client Credentials (Wallet).” You’ll set a password and download a ZIP file containing files like tnsnames.ora and certificates. This method is straightforward for DBAs managing the instance directly from its service page.

Click on the Autonomous Database in the menu, click a database name, then choose DB Connection button, then download the wallet (D):From the OCI console’s main navigation, go to “Autonomous Database,” select your database by name, and click the “DB Connection” button on the details page. Then, select “Download Wallet,” provide a password, and download the ZIP file. This is a common path for users accessing connectivity details directly from the database overview.

The incorrect options are:

Click the compute section of the menu, then choose instance configurations, then download wallet (A):The “Compute” section is for virtual machines, not databases. Credentials are tied to the ADB service, not compute instances.

Click on the Object Storage and find your Autonomous bucket and download the wallet credentials (C):Object Storage holds user data or backups, not the wallet credentials, which are generated and downloaded from the ADB service interface.

Both B and D provide secure access to the wallet for tools like SQL Developer.