- A
Ora2Pg
Ora2Pg is designed to convert Oracle schemas and objects to PostgreSQL.
- B
pglogical
Why wrong: pglogical is a logical replication tool, not a schema conversion tool.
- C
pg_dump
Why wrong: pg_dump is for PostgreSQL backups, not for converting Oracle schemas.
- D
Database Migration Service (DMS)
Why wrong: DMS handles continuous migration and data replication but does not perform schema conversion for heterogeneous databases.
Question 593 of 1,000
PCDOE Migrate Database Solutions Practice Question
This PCDOE practice question tests your understanding of migrate database 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.
An organization is planning a database migration from Oracle to PostgreSQL on Cloud SQL. They have a large number of stored procedures that use Oracle-specific PL/SQL features. Which tool should they use to automate the schema conversion, including conversion of PL/SQL to PL/pgSQL?
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, including the conversion of Oracle-specific PL/SQL stored procedures into PL/pgSQL. It handles schema objects, data types, and procedural code, making it the correct choice for this scenario where PL/SQL conversion is a key requirement.
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 is designed to convert Oracle schemas and objects to PostgreSQL.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
pglogical
Why it's wrong here
pglogical is a logical replication tool, not a schema conversion tool.
- ✗
pg_dump
Why it's wrong here
pg_dump is for PostgreSQL backups, not for converting Oracle schemas.
- ✗
Database Migration Service (DMS)
Why it's wrong here
DMS handles continuous migration and data replication but does not perform schema conversion for heterogeneous databases.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Database Migration Service (DMS) can handle all aspects of migration including PL/SQL conversion, but DMS primarily handles data transfer and schema creation, not procedural code conversion, which requires a specialized tool like Ora2Pg.
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 code. It uses a configuration file to map Oracle data types to PostgreSQL equivalents and applies transformation rules for PL/SQL constructs like cursors, exceptions, and packages, which are not natively supported in PostgreSQL. In real-world migrations, Ora2Pg may require post-conversion manual tuning for complex PL/SQL features like autonomous transactions or Oracle-specific built-in functions.
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.
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Migrate Database Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this PCDOE question test?
Migrate Database Solutions — This question tests Migrate Database 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, including the conversion of Oracle-specific PL/SQL stored procedures into PL/pgSQL. It handles schema objects, data types, and procedural code, making it the correct choice for this scenario where PL/SQL conversion is a key requirement.
What should I do if I get this PCDOE 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
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Last reviewed: Jul 4, 2026
This PCDOE 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 PCDOE exam.
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