20+ practice questions focused on 23ai New Features — one of the most tested topics on the Oracle Database 23ai Administrator Professional (OCP, 1Z0-183) (OCP) exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start 23ai New Features PracticeYou are migrating a legacy application to use Wide Tables in 23ai. What is the maximum number of columns supported by a Wide Table?
Explanation: Oracle 23ai Wide Tables support up to 4096 columns, a significant increase over the traditional 1000-column limit for standard tables. This allows schemas with many sparse attributes (common in IoT, telemetry, and JSON-like data) to be stored natively without resorting to EAV models or JSON columns. The 4096 limit is the documented maximum for Wide Tables in 23ai.
To enable lock-free reservations on a table, which clause must be used in the CREATE or ALTER TABLE statement?
Explanation: Oracle's lock-free reservations feature is enabled by adding the LOCK-FREE RESERVATIONS clause to a CREATE TABLE or ALTER TABLE statement. This clause activates the reservation mechanism that lets sessions reserve rows without holding row-level locks, improving concurrency for high-contention workloads. The exact syntax is required — no other keyword combination activates the feature.
When configuring Parallel DML in 23ai, which parameter must be set to 'ALWAYS' to ensure parallel execution for DML statements without hints?
Explanation: Setting ENABLE_PARALLEL_DML to ALWAYS ensures that all DML operations are executed in parallel if possible.
Which component allows True Cache to provide high performance for read-only workloads by caching data on the application tier?
Explanation: True Cache is a read-only cache that resides in the application tier to offload the primary database.
Which SQL function is used to calculate the similarity between two vectors?
Explanation: VECTOR_DISTANCE is the standard operator for similarity search in 23ai.
+15 more 23ai New Features questions available
Practice all 23ai New Features questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of 23ai New Features. 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
23ai New Features questions on the OCP 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. 23ai New Features is tested as part of the Oracle Database 23ai Administrator Professional (OCP, 1Z0-183) (OCP) blueprint. Practicing with targeted 23ai New Features questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but 23ai New Features 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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