Replication Slots

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Nov 5, 2020 · Databases

Managing Excessive WAL Growth in PostgreSQL 11: Diagnosis and Resolution

This article explains why a low‑traffic PostgreSQL 11 database can accumulate massive WAL files, analyzes relevant configuration parameters and replication slots, demonstrates diagnostic SQL commands, and provides step‑by‑step actions—including adjusting archive_timeout, handling replication slots, and forcing a checkpoint—to reclaim disk space.