- A
pgTap is needed to validate the converted code.
Why wrong: pgTap is a testing framework, not a conversion tool.
- B
The Database Migration Service is required to convert stored procedures.
Why wrong: DMS focuses on data replication, not schema conversion.
- C
The PostgreSQL target instance is running an incompatible version.
Why wrong: Ora2Pg supports multiple PostgreSQL versions; version mismatch is unlikely to be the cause.
- D
Ora2Pg does not convert Oracle-specific PL/SQL packages like DBMS_*.
Many Oracle-specific packages (e.g., DBMS_OUTPUT) have no direct equivalent in PostgreSQL and require manual rewriting.
Question 709 of 980
PCD Practice Question: Manage a Solution that Can Span Multiple Database Systems
This PCD practice question tests your understanding of manage a solution that can span multiple database systems. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is migrating an Oracle database to Cloud SQL for PostgreSQL using Ora2Pg. They need to convert stored procedures and functions. After conversion, they find that some PL/SQL code is not working. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Ora2Pg does not convert Oracle-specific PL/SQL packages like DBMS_*.
Ora2Pg is an open-source tool that automates migration from Oracle to PostgreSQL, but it does not convert Oracle-specific PL/SQL packages such as DBMS_*, UTL_*, or other built-in Oracle libraries. These packages have no direct equivalent in PostgreSQL, so any stored procedures or functions that rely on them will fail after conversion. Manual rewriting or using PostgreSQL-compatible extensions (e.g., pg_dbms_* community modules) is required.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
pgTap is needed to validate the converted code.
Why it's wrong here
pgTap is a testing framework, not a conversion tool.
- ✗
The Database Migration Service is required to convert stored procedures.
Why it's wrong here
DMS focuses on data replication, not schema conversion.
- ✗
The PostgreSQL target instance is running an incompatible version.
Why it's wrong here
Ora2Pg supports multiple PostgreSQL versions; version mismatch is unlikely to be the cause.
- ✓
Ora2Pg does not convert Oracle-specific PL/SQL packages like DBMS_*.
Why this is correct
Many Oracle-specific packages (e.g., DBMS_OUTPUT) have no direct equivalent in PostgreSQL and require manual rewriting.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a migration tool like Ora2Pg can fully automate the conversion of all Oracle PL/SQL code, when in reality Oracle-specific packages are not supported and require manual intervention.
Detailed technical explanation
How to think about this question
Ora2Pg uses a Perl-based parser to translate Oracle PL/SQL syntax into PostgreSQL PL/pgSQL, but it cannot map Oracle's built-in packages (e.g., DBMS_OUTPUT, DBMS_SCHEDULER, UTL_FILE) because PostgreSQL lacks native equivalents. In practice, a migration often requires replacing DBMS_OUTPUT.PUT_LINE with RAISE NOTICE, and DBMS_SCHEDULER with pg_cron or pg_tle extensions. The tool's documentation explicitly lists unsupported features, including Oracle-specific packages, which must be manually refactored.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this PCD question test?
Manage a Solution that Can Span Multiple Database Systems — This question tests Manage a Solution that Can Span Multiple Database Systems — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Ora2Pg does not convert Oracle-specific PL/SQL packages like DBMS_*. — Ora2Pg is an open-source tool that automates migration from Oracle to PostgreSQL, but it does not convert Oracle-specific PL/SQL packages such as DBMS_*, UTL_*, or other built-in Oracle libraries. These packages have no direct equivalent in PostgreSQL, so any stored procedures or functions that rely on them will fail after conversion. Manual rewriting or using PostgreSQL-compatible extensions (e.g., pg_dbms_* community modules) is required.
What should I do if I get this PCD question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
This PCD practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCD exam.
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