Book Image

PostgreSQL 14 Administration Cookbook

By : Simon Riggs, Gianni Ciolli
5 (1)
Book Image

PostgreSQL 14 Administration Cookbook

5 (1)
By: Simon Riggs, Gianni Ciolli

Overview of this book

PostgreSQL is a powerful, open-source database management system with an enviable reputation for high performance and stability. With many new features in its arsenal, PostgreSQL 14 allows you to scale up your PostgreSQL infrastructure. With this book, you'll take a step-by-step, recipe-based approach to effective PostgreSQL administration. This book will get you up and running with all the latest features of PostgreSQL 14 while helping you explore the entire database ecosystem. You’ll learn how to tackle a variety of problems and pain points you may face as a database administrator such as creating tables, managing views, improving performance, and securing your database. As you make progress, the book will draw attention to important topics such as monitoring roles, validating backups, regular maintenance, and recovery of your PostgreSQL 14 database. This will help you understand roles, ensuring high availability, concurrency, and replication. Along with updated recipes, this book touches upon important areas like using generated columns, TOAST compression, PostgreSQL on the cloud, and much more. By the end of this PostgreSQL book, you’ll have gained the knowledge you need to manage your PostgreSQL 14 database efficiently, both in the cloud and on-premise.
Table of Contents (14 chapters)

Major upgrades in-place

PostgreSQL provides an additional supplied program, called pg_upgrade, which allows you to migrate between major releases, such as from 9.2 to 9.6, or from 9.6 to 11; alternatively, you can upgrade straight to the latest server version. These upgrades are performed in-place, meaning that we upgrade our database without moving to a new system. That does sound good, but pg_upgrade has a few things that you may wish to consider as potential negatives, which are outlined here:

  • The database server must be shut down while the upgrade takes place.
  • Your system must be large enough to hold two copies of the database server: old and new copies. If it's not, then you have to use the link option of pg_upgrade, or use the Major upgrades online recipe, coming next in this chapter. If you use the link option on pg_upgrade, then there is no pg_downgrade utility. The only option in that case is...