mediumMultiple ChoiceObjective-mapped
Google PCA Practice Question: Migrating an on-premises Oracle database to…
A company is migrating an on-premises Oracle database to Google Cloud. They want to minimize application changes and need a fully managed, PostgreSQL-compatible database with high performance for OLTP workloads. Which service is MOST suitable?
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
✓
AlloyDB
AlloyDB is a fully managed, PostgreSQL-compatible database optimized for high-performance OLTP workloads, designed for migration from Oracle with minimal changes. Cloud SQL for PostgreSQL is also managed but does not offer the same performance optimizations as AlloyDB. Cloud Spanner is global and SQL-compatible but may require application changes. Bigtable is NoSQL.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Bigtable
Why it's wrong here
Bigtable is NoSQL and not compatible with SQL or Oracle applications.
- ✓
AlloyDB
Why this is correct
AlloyDB is PostgreSQL-compatible, fully managed, and offers 4x faster transaction processing than standard PostgreSQL, making it ideal for Oracle migrations.
- ✗
Cloud SQL for PostgreSQL
Why it's wrong here
Cloud SQL is managed but lacks AlloyDB's performance optimizations for Oracle migrations.
- ✗
Cloud Spanner
Why it's wrong here
Spanner is globally distributed and SQL-compatible but may require schema changes and is overkill for a single-region OLTP workload.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Spanner
Google Cloud's globally distributed, strongly consistent, and horizontally scalable database service designed for mission-critical, transactional workloads.
Key term
AlloyDB
AlloyDB is a fully managed, PostgreSQL-compatible database service from Google Cloud designed for high performance, scalability, and reliability for transactional and analytical workloads.
About these practice questions
This PCA question is part of Courseiva's 955-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCA 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 PCA exam.