PCDE Migrate data solutions Practice Question
An engineer is manually migrating a MySQL database to Cloud SQL using mysqldump and mysql import. They need to ensure the dump captures a consistent snapshot without locking InnoDB tables. Which mysqldump flags should they use?
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
✓
--single-transaction --skip-lock-tables
--single-transaction uses a transaction to get a consistent snapshot for InnoDB without locking. --skip-lock-tables prevents table locks. Together they achieve consistent backup without disrupting writes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
--single-transaction --lock-tables
Why it's wrong here
--lock-tables would lock tables, defeating the purpose.
- ✗
--lock-tables --skip-lock-tables
Why it's wrong here
Conflicting flags; --lock-tables would lock all tables.
- ✓
--single-transaction --skip-lock-tables
Why this is correct
Correct combination for consistent InnoDB snapshot without locking.
- ✗
--all-databases --single-transaction
Why it's wrong here
--all-databases dumps all databases but doesn't address locking; --skip-lock-tables is needed.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCDE 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 PCDE exam.