How to Actually Recover Data in PostgreSQL

▤ Summary

This article explains how to recover data in PostgreSQL when tables, pages, indexes, or WAL-related structures become corrupted. It walks through practical tools and methods such as pg_dump, pg_checksums, pg_filedump, pageinspect, amcheck, pg_surgery, and pg_probackup checkdb. It also shows how to inspect errors, identify broken pages or toast data, and isolate damaged rows using ctid-based techniques. The piece focuses on real-world recovery workflows for database administrators and PostgreSQL operators.

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