50 Oracle AI Cloud Database Services 2025 Professional Practice Questions: Question Bank 2025

Your team is designing a highly available Oracle database deployment on OCI for a mission-critical application. The application requires automatic failover within a region and minimal data loss without managing OS-level clustering. Which approach best meets this requirement?

A data science team wants to train a machine learning model directly where the data resides in an Oracle Database on OCI to avoid data movement. They also want SQL-based workflows that DBAs can operate. Which is the most appropriate approach?

You provision an Autonomous Database and want to ensure the application can always connect using a stable endpoint even during planned maintenance operations. Which connection approach is recommended?

A security engineer needs to enforce least privilege for OCI access to manage database resources and audit all administrative actions. What is the best-practice approach?

A retail company wants to run real-time fraud detection. Transactions are stored in Oracle Database, and the team needs to score each transaction with minimal latency while keeping feature calculations consistent across batch and real-time scoring. What is the best approach?

You need to design network access for a private Oracle Database deployment in OCI so that only application subnets can connect to the database, and administrative access is restricted and auditable. Which design is most appropriate?

After provisioning a DB System, performance tests show high read latency during peak hours. AWR reports significant waits related to storage I/O and a large amount of full table scans. Which first action is most appropriate to address the issue?

A team must provision multiple identical database environments (dev/test/prod) with consistent configuration and minimal manual steps. They also need an auditable history of changes to the provisioning logic. What is the recommended approach?

You are deploying an AI-driven recommendation feature that uses embeddings stored in an Oracle Database. Users complain that similarity searches are slow and sometimes time out during peak load. The table has millions of vectors and queries use nearest-neighbor search. Which action is most likely to address the root cause while preserving accuracy?

A regulated enterprise must implement a disaster recovery design for an OCI-hosted Oracle database such that: (1) production and standby are in different regions, (2) failover is tested regularly, and (3) access to encryption keys is controlled and auditable. Which architecture best satisfies these requirements?

You are designing an Oracle Cloud database architecture for a workload that requires automatic failover within the same region and minimal application changes. Which OCI database option best meets this requirement?

A data science team wants to train a machine learning model close to the data stored in Oracle Database to minimize data movement and governance risk. Which approach best aligns with this requirement?

You provision an Autonomous Database and need to ensure that only a specific private subnet can access it, with no public internet access. What is the recommended configuration?

A retailer runs multiple microservices that generate embeddings for product search. They want to store embeddings in Oracle Database and perform similarity search with low latency. What design is most appropriate?

A team enables SQL tracing to troubleshoot a performance issue, but they want to avoid collecting excessive trace data from unrelated sessions. What is the best practice approach?

You need to migrate an on-premises Oracle database to OCI with minimal downtime and want to validate data consistency while replication is running. Which solution best fits?

A regulated customer requires separation of duties: DBAs must not have the ability to read sensitive application data, but they still need to manage the database. Which Oracle Database capability best addresses this requirement in OCI database services?

You are provisioning Oracle Base Database Service for an application with predictable performance needs and strict isolation from other tenants. Which provisioning choice most directly supports these requirements?

An application uses retrieval-augmented generation (RAG) against documents stored in Oracle Database. Users report that answers cite the wrong document passages, especially after recent document updates. Which is the most likely root cause in the RAG pipeline?

A security team mandates that database encryption keys must be stored and managed outside the database host with centralized lifecycle control. For an OCI-managed Oracle Database deployment, what is the best-practice solution?

You are designing an Oracle Database deployment on OCI that must provide the lowest operational overhead while automatically handling patching and routine maintenance. The workload is a standard OLTP application with predictable scaling needs. Which database service is the best fit?

A team is integrating an OCI Generative AI application with an Oracle Database that contains sensitive PII. They want the model to answer questions using up-to-date database content without sending raw PII to the model. What is the best approach?

An application uses a private subnet for its database. Security requires the database to be reachable only from application servers in the same VCN, with no public IP exposure. Which configuration best satisfies this requirement?

You need to design for high availability within a region for an Oracle database workload on OCI. The requirement is to minimize RTO for an instance failure and avoid single points of failure at the compute layer. Which design is most appropriate?

A data science team trains models using data in Oracle Database and wants to ensure training and inference run close to the data to reduce data movement and improve security controls. Which approach best aligns with this requirement?

A DBA observes frequent "log file sync" waits and high commit latency after migrating an OLTP workload to a new OCI database deployment. The application performs many small transactions. Which action is the most appropriate first step to troubleshoot and potentially reduce commit latency?

You are building a semantic search feature over product manuals stored in Oracle Database. The team wants to store embeddings and efficiently retrieve the top-k most similar passages for a user query. Which design is most appropriate?

Your organization requires that database administrators cannot view sensitive application data, but they still need to manage database operations. You also need auditing of access to sensitive columns. Which combination best meets this requirement?

A mission-critical database must meet strict recovery objectives and requires protection from a full regional outage. The solution must allow failover to another region with minimal data loss while keeping operations manageable. Which architecture is most appropriate?

A company wants to expose a natural-language analytics assistant that answers questions using data from an Oracle Database. Security requires least-privilege access, and the team must prevent the assistant from executing arbitrary SQL beyond approved views. What is the best design pattern?

A team is choosing between several Oracle Cloud Database Services for an application that requires full database control (OS access, custom packages) and tight integration with OCI networking. Which service best fits this requirement?

A security engineer wants to ensure application traffic to an OCI database never traverses the public internet and uses private IPs only. What is the recommended networking approach?

A developer wants to call an OCI AI service from inside an Oracle Database without embedding long-lived user credentials in code. Which authentication approach is recommended?

An operations engineer wants to ensure a newly provisioned database can be quickly restored after a failure with minimal manual steps. Which feature is most directly intended for this requirement?

A data science team is building an inference pipeline where embeddings generated by an OCI AI model must be stored and queried for similarity search directly from the database. Which database capability best supports this design?

A company must enforce that database backups are encrypted and that keys are centrally managed with rotation and audit capabilities. What is the best OCI approach?

After enabling an AI-driven feature that calls an external OCI AI service, users report intermittent timeouts. The database and application subnets are private-only. Which troubleshooting step is MOST likely to identify the root cause?

A DBA needs to clone a production database to a test environment while masking sensitive columns (PII) and keeping referential integrity. Which approach is most appropriate?

An enterprise requires cross-region disaster recovery for a mission-critical Oracle Database on OCI. The RPO must be near-zero and failover must be orchestrated with minimal data loss. Which architecture best meets this requirement?

A security audit requires that only specific database administrators can manage encryption keys, while DBAs who manage performance and availability must not be able to use or rotate keys. How should you implement this separation of duties in OCI?

You need to ensure that an application can connect to an Oracle Database in OCI even if the primary database system becomes unavailable, without changing application connection strings. Which approach best meets this requirement?

A data science team wants to generate vector embeddings for product descriptions stored in an Oracle Database on OCI and run similarity search directly in SQL with minimal data movement. What is the recommended approach?

You are provisioning a database service in OCI for a workload that must not be accessible from the public internet. Which configuration best enforces this requirement?

After enabling an application feature that performs vector similarity searches, query latency increases significantly only during peak hours. CPU usage remains moderate, but I/O wait spikes. Which action is the best first step to troubleshoot performance in OCI?

A team wants to use a managed database service that supports automatic patching and backups while still allowing them to create and manage schemas, users, and SQL objects. They do NOT want to manage OS-level tasks. Which OCI database service model best fits?

You need to restrict which OCI resources can call an AI embedding service used by your database-integrated workload. Which control provides the most appropriate authorization at the cloud level?

A company needs a repeatable way to provision identical database environments (networking, database resources, and access policies) across multiple compartments for different project teams. Which approach is considered best practice?

You are implementing a Retrieval-Augmented Generation (RAG) pattern where the database stores vectors for documents and the application queries top-k similar chunks before calling an LLM. To reduce hallucinations, what is the most effective database-side tactic?

A regulated customer requires that database backups are encrypted with customer-controlled keys and that key usage is auditable. Which design best meets this requirement in OCI?

A mission-critical workload requires both high availability within a region and disaster recovery to another region, with a defined maximum data loss (RPO) and automated role transitions. Which architecture most appropriately satisfies this requirement?