20+ practice questions focused on Databases — one of the most tested topics on the Oracle Cloud Infrastructure 2026 Architect Professional (1Z0-997-26) (1Z0-997-26) exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Databases PracticeYou are migrating an on-premises Oracle Database (version 19c) to Oracle Autonomous Database (Serverless) using Oracle Data Pump. Which action is mandatory to ensure compatibility before generating the Data Pump export dump file?
Explanation: When migrating to Autonomous Database using Data Pump, you must run the DBMS_CLOUD.PREPARE_FOR_AUTONOMOUS procedure or use the Autonomous Database Migration tool to check and convert incompatible tablespaces, segments, and objects.
You need to migrate a 50 TB Oracle Database from on-premises to Exadata Database Service on Dedicated Infrastructure with minimal downtime. The source database is operating on AIX and uses big-endian architecture, while OCI Exadata runs on little-endian Linux. Which migration method handles cross-platform endian conversion most efficiently?
Explanation: RMAN Transportable Tablespaces with cross-platform data file conversion is the Oracle-recommended method for moving data between platforms with different endianness. It uses RMAN CONVERT DATAFILE (or CONVERT TABLESPACE) to transform data files from big-endian AIX to little-endian Linux, and only the metadata is exported/imported via Data Pump, minimizing downtime for a 50 TB database.
You are configuring scaling parameters for an Autonomous Database on Dedicated Infrastructure. You need to enable automatic scaling of CPU cores to handle unpredictable traffic bursts while maintaining strict cost controls. What is the maximum CPU core auto-scaling limit for an Autonomous Container Database on Dedicated Infrastructure?
Explanation: The maximum CPU core auto-scaling limit for an Autonomous Container Database on Dedicated Infrastructure is up to the total number of unallocated CPU cores available in the underlying Exadata Infrastructure instance. Auto-scaling allows the database to use more CPU cores than the base OCPU count, but it cannot exceed the total available cores in the Exadata system that are not already allocated to other ACDs or databases. This ensures that resources are shared efficiently within the dedicated infrastructure.
You are designing a multi-database architecture where applications require read-scaling across different geographic regions with minimal replication lag. You decide to deploy Autonomous Data Warehouse (ADW) instances across three regions connected via GoldenGate. Which feature of Autonomous Database can be leveraged alongside GoldenGate to prevent sequence cache duplication conflicts across regions?
Explanation: When multiple Autonomous Data Warehouse instances in different regions each generate sequence values locally, GoldenGate replication can produce duplicate keys because each region's sequence cache starts at the same point. Configuring global sequences with distinct increment and offset values per region (e.g., region A: increment 3, offset 1; region B: increment 3, offset 2; region C: increment 3, offset 3) guarantees non-overlapping value ranges. This is the standard Oracle mechanism for multi-master sequence coordination.
An architect is configuring disaster recovery for an Autonomous Database (Serverless) instance using Autonomous Data Guard. The primary database resides in the US East (Ashburn) region, and the standby is in US West (Phoenix). What is the behavior of the standby database regarding read operations?
Explanation: Autonomous Data Guard standby databases in Oracle Autonomous Database (Serverless) are maintained in a read-only, mounted state that permits reporting and query workloads while the primary continues to serve read-write traffic. This is a core benefit of ADG: offloading analytics to the standby without impacting the primary. The standby continuously applies redo from the primary but does not accept DML until a switchover or failover promotes it.
+15 more Databases questions available
Practice all Databases questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Databases. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Databases questions on the 1Z0-997-26 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Databases is tested as part of the Oracle Cloud Infrastructure 2026 Architect Professional (1Z0-997-26) (1Z0-997-26) blueprint. Practicing with targeted Databases questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 1Z0-997-26 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Databases is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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