--- title: Upgrading PostgreSQL 9.6 to 17 with pg | daily.dev description: A step-by-step guide for upgrading PostgreSQL 9.6 to 17 on Ubuntu using pg_upgrade. Covers all phases: installing PG17 binaries, initializing the new cluster,... canonical: https://daily.dev/posts/upgrading-postgresql-9-6-to-17-with-pg-sbhxuocvy twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Upgrading PostgreSQL 9.6 to 17 with pg | daily.dev og:description: A step-by-step guide for upgrading PostgreSQL 9.6 to 17 on Ubuntu using pg_upgrade. Covers all phases: installing PG17 binaries, initializing the new cluster,... og:url: https://daily.dev/posts/upgrading-postgresql-9-6-to-17-with-pg-sbhxuocvy og:image: https://api.daily.dev/og/posts/SBHxUOCvY.png og:image:alt: Upgrading PostgreSQL 9.6 to 17 with pg og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Upgrading PostgreSQL 9.6 to 17 with pg **[Planet PostgreSQL](https://daily.dev/sources/planet-postgresql)** · 8 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide for upgrading PostgreSQL 9.6 to 17 on Ubuntu using pg_upgrade. Covers all phases: installing PG17 binaries, initializing the new cluster, migrating configuration (including a table of removed/renamed parameters across versions 10–17), handling incompatible extensions like repmgr, running pg_upgrade with the --link flag for fast in-place upgrades, post-upgrade tasks (running analyze_new_cluster.sh, rebuilding hash indexes), and validation queries for checking invalid indexes and extension version mismatches. Key gotchas include the removal of recovery.conf in PG12, password_encryption default change to scram-sha-256 in PG14, and the fact that the old cluster's data directory is tainted after using --link. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [PostgreSQL 18.1, 17.7, 16.11, 15.15, 14.20, and 13.23 Released\!](https://daily.dev/posts/postgresql-18-1-17-7-16-11-15-15-14-20-and-13-23-released--wwybaugkn) · PostgreSQL · 22 upvotes · 0 comments --- Tags: [#database](https://daily.dev/tags/database), [#postgresql](https://daily.dev/tags/postgresql), [#ubuntu](https://daily.dev/tags/ubuntu) [View this post on daily.dev](https://daily.dev/posts/upgrading-postgresql-9-6-to-17-with-pg-sbhxuocvy) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Upgrading PostgreSQL 9.6 to 17 with pg","url":"https://daily.dev/posts/upgrading-postgresql-9-6-to-17-with-pg-sbhxuocvy","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/upgrading-postgresql-9-6-to-17-with-pg-sbhxuocvy"},"datePublished":"2026-07-16T09:48:34.911Z","dateModified":"2026-07-16T09:48:59.364Z","description":"A step-by-step guide for upgrading PostgreSQL 9.6 to 17 on Ubuntu using pg_upgrade. 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