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Oracle 1z1-148 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Oracle Database: Advanced PL/SQL |
| Exam Number: | 1Z0-148 |
| Passing Score: | 60% (approx.) |
| Exam Price: | USD $245 (approx.) |
| Exam Format: | Multiple choice |
| Related Certifications: | Oracle Database Program with PL/SQL (1Z0-149) Oracle Database SQL (1Z0-071) |
| Real Exam Qty: | 70–85 |
| Certificate Validity Period: | No expiry (certification does not expire) |
| Exam Duration: | 120 minutes |
| Available Languages: | English, Japanese |
| Sample Questions: |  |
| Exam Way: | Onsite at test center or online proctored delivery |
| Pre Condition: | Recommended: Experience with PL/SQL programming and Oracle Database, and passing Oracle Database SQL (1Z0-071) or equivalent foundation knowledge |
| Official Syllabus URL: | https://education.oracle.com/oracle-database-pl-sql-developer-certified-professional/trackp_OCPPLSQL19C |
Oracle 1z1-148 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Advanced Interface Methods | - Execute external C programs and Java programs from PL/SQL |
| Manipulating Large Objects (LOBs) | - Create and maintain LOB data types and use DBMS_LOB |
| Designing PL/SQL Code | - Guidelines for cursor design and use of cursor variables - Use of DBMS_SQL functions and advanced constructs |
| Performance and Caching | - Optimize PL/SQL performance, result caching and parallel execution |
| Security and Code Robustness | - Implement error handling and mitigate SQL injection |
| Working with Collections | - Create and manage nested tables, varrays, associative arrays |
| Analyzing and Profiling PL/SQL Code | - Trace and profile code using supplied packages |
The Oracle 1z1-148 Exam, Question by Question
Oracle Database: Advanced PL/SQL is an official exam run by Oracle under exam code 1z1-148. Passing it awards the Oracle Database 12c certification, which sits at the Professional (OCP PL/SQL Developer Certified Professional) tier. It also counts toward related credentials such as Oracle Database Program with PL/SQL (1Z0-149), Oracle Database SQL (1Z0-071). Certified professionals remain in shorter supply than the market wants, which is precisely why this exam keeps showing up in conversations about better roles and better pay.
The Oracle Database: Advanced PL/SQL exam gives you 120 minutes to work through 70–85 questions. That is a tight ratio, and it punishes candidates who get emotionally attached to any single item. The fix is mechanical: answer what you know, flag what you do not, and keep moving. A few full-length timed runs in the Actual4Exams test engine, with its randomized question order, will calibrate your pace far better than untimed reading ever could.
The official fee for Oracle Database: Advanced PL/SQL is USD $245 (approx.), and 60% (approx.) is what passing takes. The uncomfortable part: retakes cost the full USD $245 (approx.) again, which makes preparation the cheapest line item in this whole project. Before booking, put yourself through repeated scored sessions with the Actual4Exams practice tests and compare results over time; a stable margin above the passing line, not a single lucky run, is when you are ready.
Recommended: Experience with PL/SQL programming and Oracle Database, and passing Oracle Database SQL (1Z0-071) or equivalent foundation knowledge
Vendor rules do get revised, so treat this as your starting point and confirm the current eligibility details before booking via the official exam page.
It is. Actual4Exams publishes a free PDF demo of the Oracle Database: Advanced PL/SQL material, so the product can prove itself before you pay. Your purchase then comes with 365 days of free updates, and once that period ends, extending the update service costs 50% of the regular price. The test engine software itself is verified malware-free and safe to install.
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Oracle Database: Advanced PL/SQL breaks down into 7 official domains, led by Working with Collections, Advanced Interface Methods, and Designing PL/SQL Code. You will find the full topic-by-topic outline above on this page; use the weightings to budget your study hours where they pay back the most.
Oracle Database: Advanced PL/SQL Sample Questions:
Question 1
Which three statements are true about varrays in a database table column? (Choose three.)
A. A varray used as a column in a database table must be initialized to empty.
B. The data in a single element of a varray can only be changed through PL/SQL.
C. A varray's size can be increased beyond the maximum number of elements specified in the definition.
D. The data in a single element of a varray can be changed through either PL/SQL or SQL.
E. A varray's size can be both increased and decreased from the maximum number of elements specified in the definition.
F. A varray may be stored outside the table segment in which it is defined but still in the same tablespace.
G. A varray used as a column in a database table must be initialized to null.
H. A varray is always stored in the same segment as the table in which it is defined.
Question 2
Examine this block:
Which two will be correct after line 5?
A. va. LIMIT and va. NEXT (199) will return the same value.
B. va. NEXT (199) will return NULL.
C. va. LIMIT and va. COUNT will return the same value.
D. va. LAST and va. LIMIT will return the same value.
E. va. LAST will return 200.
F. va. LAST and va. COUNT will return the same value.
Question 3
Your company's executive team voted to give a one-time special bonus, the amount of which is to be based on number of years of service. The bonus table will be updated using a procedure called update_bonus().
Examine this PL/SQL block which shows the logic to calculate the bonus:
Consider these possible optimization actions:
1.Remove the service_days calculation statement.
2.Move bonus1 and bonus2 initializations out of the loop.
3.Inline the update_bonus() subprogram.
4.Call update_bonus(), passing the literal bonus amount instead of the bonus1 or bonus2 variables.
Which set of optimizations will be performed if this block is compiled with PLSQL_OPTIMIZE_LEVEL = 2?
A. 1, 2, 3, and 4
B. 3 and 4 only
C. 1, 2, and 4 only
D. 1 and 3 only
E. 1 and 2 only
Question 4
Examine these statements regarding the DBMS_RESULT_CACHE package:
1.DBMS_RESULT_CACHE provides subprograms to administer the part of the shared pool used by the PL/ SQL function result cache only.
2.DBMS_RESULT_CACHE provides subprograms to administer the part of the shared pool used by both the PL/SQL function result cache and the SQL result cache.
3.DBMS_RESULT_CACHE package is owned by the SYS user.
4.RESULT_CACHE_MODE can be set using a subprogram defined in the DBMS_RESULT_CACHE package.
Which set of statements is correct?
A. 2 and 4
B. 2 and 3
C. 1 and 3
D. 2, 3 and 4
E. 1 and 4
Question 5
Examine the structure and data in the CUSTOMERS table:
Examine this code:
What is the outcome on execution with SERVEROUTPUT enabled?
A. It displays 3 for both the row count and the total.
B. It displays 3 for the row count and 2 for the total.
C. It throws a PL/SQL: numeric or value error: NULL index table key value exception.
D. It throws a NO_DATA_FOUND exception.
Solutions:
| Question 1 Answer: D,E,F | Question 2 Answer: B,F | Question 3 Answer: E | Question 4 Answer: A | Question 5 Answer: A |
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