- A
Ora2Pg
Ora2Pg converts Oracle schemas to PostgreSQL, including PL/SQL to PL/pgSQL.
- B
Database Migration Service
Why wrong: DMS handles data migration, but schema conversion for Oracle to PostgreSQL typically requires Ora2Pg or similar tools.
- C
pgloader
Why wrong: pgloader focuses on loading data, not full schema conversion of stored procedures.
- D
Liquibase
Why wrong: Liquibase is for versioning schema changes, not Oracle-to-PostgreSQL conversion.
Question 953 of 980
PCD Migrate Data Solutions Practice Question
This PCD practice question tests your understanding of migrate data solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 team plans to migrate an Oracle database to Cloud SQL for PostgreSQL. They have identified complex PL/SQL packages that need conversion. Which open-source tool is specifically designed to assist with schema conversion from Oracle to PostgreSQL?
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
Ora2Pg is an open-source tool specifically designed to automate the migration of Oracle databases to PostgreSQL. It converts Oracle PL/SQL code, including complex packages, procedures, and functions, into PostgreSQL-compatible PL/pgSQL, and also handles schema objects like tables, views, sequences, and indexes. This makes it the correct choice for the team's need to convert complex PL/SQL packages.
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.
- ✓
Ora2Pg
Why this is correct
Ora2Pg converts Oracle schemas to PostgreSQL, including PL/SQL to PL/pgSQL.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Database Migration Service
Why it's wrong here
DMS handles data migration, but schema conversion for Oracle to PostgreSQL typically requires Ora2Pg or similar tools.
- ✗
pgloader
Why it's wrong here
pgloader focuses on loading data, not full schema conversion of stored procedures.
- ✗
Liquibase
Why it's wrong here
Liquibase is for versioning schema changes, not Oracle-to-PostgreSQL conversion.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse pgloader's data loading capabilities with schema conversion, or assume Database Migration Service is open-source, when in fact the question specifically asks for an open-source tool designed for schema conversion from Oracle to PostgreSQL.
Trap categories for this question
Similar concept trap
DMS handles data migration, but schema conversion for Oracle to PostgreSQL typically requires Ora2Pg or similar tools.
Detailed technical explanation
How to think about this question
Ora2Pg works by connecting to the Oracle database, extracting metadata via Oracle data dictionary views (e.g., ALL_TABLES, ALL_PROCEDURES), and generating PostgreSQL-compatible DDL and PL/pgSQL scripts. It handles complex PL/SQL constructs like cursors, exceptions, and packages by translating them into PostgreSQL equivalents, though manual review is often needed for advanced features like Oracle-specific built-in functions or hierarchical queries. In real-world migrations, Ora2Pg can reduce manual conversion effort by up to 80%, but it requires careful tuning of configuration options (e.g., PLSQL_PGSQL, TYPE_CONVERSION) to handle edge cases like Oracle's REF CURSOR or BULK COLLECT.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
- →
Migrate Data Solutions — study guide chapter
Learn the concepts, then practise the questions
- →
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Targeted practice on this topic area only
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FAQ
Questions learners often ask
What does this PCD question test?
Migrate Data Solutions — This question tests Migrate Data Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Ora2Pg — Ora2Pg is an open-source tool specifically designed to automate the migration of Oracle databases to PostgreSQL. It converts Oracle PL/SQL code, including complex packages, procedures, and functions, into PostgreSQL-compatible PL/pgSQL, and also handles schema objects like tables, views, sequences, and indexes. This makes it the correct choice for the team's need to convert complex PL/SQL packages.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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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