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How to optimize PostgreSQL autovacuum settings to prevent transaction ID wraparound and table bloat?

PostgreSQL & Query Optimization · 2 saved versions

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Version 1 (Edit)

Edited by Rahul Sharma · Aug 24, 2026 7:18 AM

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Title snapshot

How to optimize PostgreSQL autovacuum settings to prevent transaction ID wraparound and table bloat?

Summary snapshot
Tuning `autovacuum_vacuum_scale_factor` and `vacuum_cost_limit` for write-heavy applications.
Content snapshot
### Autovacuum Tuning Lower `autovacuum_vacuum_scale_factor` from default 0.2 to 0.05 on large tables so vacuuming runs frequently in small background batches.
Source snapshot

https://developers.google.com/search/docs

Version 1 (Original Post)

Published by Rahul Sharma · Aug 9, 2026 5:37 AM

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Post originally created and published to the Global Hub.

Original Title

How to optimize PostgreSQL autovacuum settings to prevent transaction ID wraparound and table bloat?

Original Summary
Tuning `autovacuum_vacuum_scale_factor` and `vacuum_cost_limit` for write-heavy applications.
Original Content
### Autovacuum Tuning Lower `autovacuum_vacuum_scale_factor` from default 0.2 to 0.05 on large tables so vacuuming runs frequently in small background batches.
Original Sources

https://developers.google.com/search/docs