Oracle 1z0-149 Practice Test Questions Answers
Exam Code: 1z0-149
(Updated 65 Q&As with Explanation)
Exam Name: Oracle Database 19c: Program with PL/SQL
Last Update: 18-Jun-2025
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1z0-149 Overview
Oracle 1Z0-149 Exam Overview
| Category | Details |
|---|---|
| Exam Name | Oracle Database PL/SQL Developer Certified Professional |
| Exam Code | 1Z0-149 |
| Duration | 90 minutes |
| Number of Questions | 65 |
| Passing Score | 66% (Scaled score system) |
| Question Format | Multiple Choice Questions (MCQs) |
| Exam Fee | $245 USD (Pricing may vary by country or currency) |
| Delivery Method | Online (via Oracle University) |
| Recommended Training | Oracle's "Oracle Database PL/SQL Developer Certified Professional" course |
| Sample Questions | Available through Oracle's official certification portal |
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Oracle 1z0-149 Exam Topics Breakdown
| Section | Topic Focus | Approx. Weight (%) |
|---|---|---|
| 1. Declaring PL/SQL Variables | - Recognize valid and invalid identifiers - List the uses of variables - Declare and initialize variables - Use bind variables - List and describe various data types using the %TYPE and %ROWTYPE attributes |
8% |
| 2. Writing Executable Statements | - Identify lexical units in a PL/SQL block - Use built-in SQL functions in PL/SQL - Use sequences in PL/SQL expressions - Describe when implicit conversions take place and when explicit conversions are needed - Write nested blocks and qualify variables with labels - Write readable code with appropriate indentation |
8% |
| 3. Writing SQL in PL/SQL | - Create PL/SQL executable blocks using DML and transaction control statements - Use the INTO clause to hold the values returned by a SQL statement |
8% |
| 4. Writing Control Structures | - Identify the uses and types of control structures (IF, CASE statements and expressions) - Construct and identify loop statements - Use EXIT and CONTINUE statements inside loops |
8% |
| 5. Working with Composite Data Types | - Create user-defined PL/SQL records - Create a record with the %ROWTYPE attribute- Create an INDEX BY table and INDEX BY table of records - Describe the differences among records, collections, and collections of records - Initialize collections and records |
8% |
| 6. Using Explicit Cursors | - Distinguish between implicit and explicit cursors - Use SQL cursor attributes - Declare and control explicit cursors - Use simple loops and cursor FOR loops to fetch data - Declare and use cursors with parameters - Lock rows with the FOR UPDATE clause - Reference the current row with the WHERE CURRENT OF clause |
8% |
| 7. Handling Exceptions | - Define PL/SQL exceptions - Recognize unhandled exceptions - Handle different types of exceptions (internally defined exceptions, predefined exceptions, and user-defined exceptions) - Propagate exceptions |
8% |
| 8. Using PL/SQL Subprograms | - Differentiate between anonymous blocks and subprograms - Create a simple procedure and invoke it from an anonymous block - Identify benefits of subprograms |
8% |
| 9. Creating Procedures and Using Parameters | - Create a procedure with parameters - Use named notation - Work with procedures (create, invoke, and remove procedures) - Handle exceptions in procedures and display a procedure's information |
8% |
| 10. Creating Functions | - Differentiate between a procedure and a function - Describe the uses of functions - Work with functions (create, invoke, and remove functions) |
8% |
| 11. Creating Packages | - Identify the benefits and components of packages - Work with packages (create package specification and body, invoke package subprograms, remove a package, and display package information) - Overload package subprograms and use forward declarations |
8% |
| 12. Working with Packages | - Use package types and variables - Use packaged constants and functions in SQL - Use ACCESSIBLE BY to restrict access to package subprograms |
8% |
| 13. Using Dynamic SQL | - Describe the execution flow of SQL statements - Use Native Dynamic SQL (NDS) - Bind PL/SQL types in SQL statements |
8% |
| 14. Design Considerations for PL/SQL Code | - Create standard constants and exceptions - Write and call local subprograms - Control the run-time privileges of a subprogram - Perform autonomous transactions - Use NOCOPY hint, PARALLEL ENABLE hint, and DETERMINISTIC clause - Use bulk binding and the RETURNING clause with DML |
8% |
| 15. Creating Compound, DDL, and Event Database Triggers | - Create triggers on DDL statements - Create triggers on system events - Describe different types of triggers and their uses |
8% |
| 16. Using the PL/SQL Compiler | - Describe the PL/SQL compiler and features - Use the PL/SQL compiler initialization parameters - Use the PL/SQL compile-time warnings |
8% |
| 17. Managing PL/SQL Code | - Describe and use conditional compilation - Code-based access control: granting roles to program units - Whitelist code access with the ACCESSIBLE BY clause - Mark code as deprecated |
8% |
| 18. Managing Dependencies | - Track and manage procedural dependencies | 8% |
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