This guide explains how to diagnose and fix a PostgreSQL instance that fails to start after a power outage, covering log inspection, missing socket files, PID checks, checkpoint corruption detection, and recovery using pg_resetwal.
After a power outage caused a PostgreSQL instance running in Kubernetes to fail with connection errors and an invalid primary checkpoint record, this guide explains how to diagnose missing socket files, inspect process IDs, use pg_resetwal to repair the checkpoint, and successfully restart the database.
This article explains how a deep understanding of database internals, illustrated by an Oracle recovery story, enables you to restore PostgreSQL instances when WAL files or pg_control are missing, providing detailed command parameters, preparation steps, and cautions for safe recovery.
This article explains why PostgreSQL data loss occurs, compares DDL and DML causes, and reviews several recovery tools—including pg_resetwal, pg_dirtyread, pg_recovery, pg_filedump, WalMiner, and pageinspect—providing usage examples, summaries, and practical recommendations for effective data restoration.
