01 · Learn
What you will learn
Explain MVCC cleanup, find tables falling behind, and tune autovacuum from measured table behaviour.
- Understand row versions
- Read vacuum and analyze health
- Tune from one table's change rate
Production Operator · Module
MVCC, vacuum, autovacuum, and bloat
Explain MVCC cleanup, find tables falling behind, and tune autovacuum from measured table behaviour.
Start the first section- Total time
- About 52 minutes
- Learning sections
- 3
- Practice
- Real SQL in a disposable PostgreSQL lab
- Reward
- Shareable module certificate after you pass
02 · Use it
Why this matters
Poor cleanup increases storage, slows queries, and can eventually threaten transaction-ID safety.
03 · Practise
What you will do
Read each short section, answer a quick understanding check, then use real SQL to solve a guided task in your own temporary database.
04 · Prove it
How you will finish
Pass the SQL lab and the module assessment. Your result is saved to your signed-in account, and a module certificate is created if you pass.
Before you start
What you should know
- You understand transactions and basic table statistics.