1500 Questions | Oracle PL/SQL Developer Professional 2026

Detailed Exam Domain Coverage

To earn the Oracle Database PL/SQL Developer Certified Professional credential, you must demonstrate a deep technical command of PL/SQL. This practice test series is meticulously aligned with the official exam domains to ensure you are prepared for the complexity of the actual test:

• Develop and Implement Data Access Solutions (20%): Mastering triggers, stored procedures, and performance-tuning techniques like the FORALL statement and OR REPLACE modifications.

• Develop and Implement Data Storage Solutions (20%): Focusing on optimization through indexing, partitioning, and compression, alongside robust data protection via security features.

• Develop and Implement Complex Business Logic and Reporting (20%): Building advanced logic with PL/SQL constructs (loops, cursors), XML Database integration, and OLAP for high-level reporting.

• Database Maintenance, Security, and Troubleshooting (20%): Scheduling jobs, managing backup/recovery, and diagnosing performance or integrity issues.

• Develop and Implement Scalable and Transactional Solutions (20%): Designing ACID-compliant databases and implementing effective concurrency control mechanisms.

Course Description

I have engineered this course specifically for developers who want to move past basic SQL and master the intricacies of the Oracle PL/SQL engine. With 1,500 high-quality practice questions, I provide a rigorous simulation of the "Certified Professional" exam environment.

This isn't just about memorizing syntax; it’s about understanding the "why" behind every execution plan and logic block. I provide a deep-dive explanation for every single question and every available option, helping you identify subtle traps that often appear in the official exam.

Sample Practice Questions

• Question 1: When migrating a legacy DML process to use bulk processing, which of the following is a primary benefit of implementing the FORALL statement?

  • A. It automatically commits the transaction after every 100 rows.

  • B. It reduces the number of context switches between the PL/SQL engine and the SQL engine.

  • C. It allows for the use of implicit cursors within a WHILE loop.

  • D. It bypasses all database constraints to ensure faster data insertion.

  • E. It converts the PL/SQL collection into a temporary physical table automatically.

  • F. It eliminates the need for any UNDO tablespace during the operation.

  • Correct Answer: B

  • Explanation:

    • B (Correct): The primary performance gain of FORALL is "bulk binding," which sends the entire collection to the SQL engine in one go, drastically reducing expensive context switching.

    • A (Incorrect): FORALL does not handle automatic commits; transaction control remains the responsibility of the developer.

    • C (Incorrect): While it works with collections, its purpose is bulk DML, not managing standard loop cursor logic.

    • D (Incorrect): Constraints are still enforced during FORALL operations unless manually disabled.

    • E (Incorrect): It operates on collections in memory; it does not create physical tables.

    • F (Incorrect): DML operations within FORALL still generate undo data to support atomicity.

• Question 2: Which clause should I use to modify an existing stored procedure without dropping it first, thereby preserving any granted object privileges?

  • A. ALTER PROCEDURE

  • B. UPDATE PROCEDURE

  • C. CREATE OR REPLACE PROCEDURE

  • D. MODIFY PROCEDURE

  • E. RECOMPILE PROCEDURE

  • F. FORCE PROCEDURE

  • Correct Answer: C

  • Explanation:

    • C (Correct): The OR REPLACE clause allows you to overwrite the existing code while keeping the object ID and all associated permissions intact.

    • A (Incorrect): ALTER PROCEDURE is generally used for recompilation or changing specific settings, not for redefining the body logic.

    • B (Incorrect): UPDATE is a DML command for table data, not a DDL command for database objects.

    • D (Incorrect): MODIFY is not a valid keyword for procedure definition in Oracle.

    • E (Incorrect): This is not standard syntax for changing the source code.

    • F (Incorrect): FORCE is sometimes used in views, but not the standard way to redefine a procedure.

• Question 3: In a highly concurrent environment, which feature ensures that a transaction is "Isolated" and follows ACID compliance?

  • A. The DBMS_OUTPUT package.

  • B. Database Indexes.

  • C. Concurrency control mechanisms like Locking and Multiversion Read Consistency (MVRC).

  • D. The FOR loops construct.

  • E. XML Database publishing.

  • F. Table Compression.

  • Correct Answer: C

  • Explanation:

    • C (Correct): Oracle uses locks and MVRC to ensure that transactions do not interfere with each other, fulfilling the Isolation requirement of ACID.

    • A (Incorrect): This is used for debugging and displaying messages.

    • B (Incorrect): Indexes improve search performance but do not manage transaction isolation.

    • D (Incorrect): Loops are logic flow controls, not transactional safety mechanisms.

    • E (Incorrect): This is for data formatting and subscription, not concurrency.

    • F (Incorrect): Compression saves storage space but has no impact on transaction isolation.

Welcome to the Exams Practice Tests Academy to help you prepare for your Oracle Database PL/SQL Developer Certified Professional exam.

• You can retake the exams as many times as you want

• This is a huge original question bank

• You get support from instructors if you have questions

• Each question has a detailed explanation

• Mobile-compatible with the Udemy app

• 30-days money-back guarantee if you're not satisfied

I hope that by now you're convinced! And there are a lot more questions inside the course.