PostgreSQL: Documentation: 17: Chapter 28. Reliability and the Write-Ahead Log

September 4, 2025: PostgreSQL 18 RC 1 Released!

Supported Versions: Current (17) / 16 / 15 / 14 / 13

Development Versions: 18 / devel

Unsupported versions: 12 / 11 / 10 / 9.6 / 9.5 / 9.4 / 9.3 / 9.2 / 9.1 / 9.0 / 8.4 / 8.3 / 8.2 / 8.1 / 8.0 / 7.4 / 7.3 / 7.2 / 7.1

Chapter 28. Reliability and the Write-Ahead Log
Prev	Up	Part III. Server Administration	Home	Next

Chapter 28. Reliability and the Write-Ahead Log

Table of Contents

28.1. Reliability

28.2. Data Checksums

28.2.1. Off-line Enabling of Checksums

28.3. Write-Ahead Logging (WAL)

28.4. Asynchronous Commit

28.5. WAL Configuration

28.6. WAL Internals

This chapter explains how to control the reliability of PostgreSQL, including details about the Write-Ahead Log.

Prev	Up	Next
27.6. Monitoring Disk Usage	Home	28.1. Reliability

Submit correction

If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.