Book Image

PostgreSQL 10 Administration Cookbook - Fourth Edition

By : Simon Riggs, Gianni Ciolli
Book Image

PostgreSQL 10 Administration Cookbook - Fourth Edition

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 10 allows users to scale up their PostgreSQL infrastructure. This book takes a step-by-step, recipe-based approach to effective PostgreSQL administration. Throughout this book, you will be introduced to these new features such as logical replication, native table partitioning, additional query parallelism, and much more. You will learn how to tackle a variety of problems that are basically the pain points for any database administrator - from creating tables to managing views, from improving performance to securing your database. More importantly, the book pays special attention to topics such as monitoring roles, backup, and recovery of your PostgreSQL 10 database, ensuring high availability, concurrency, and replication. By the end of this book, you will know everything you need to know to be the go-to PostgreSQL expert in your organization.
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 you can upgrade straight to the latest server version. These upgrades are performed in-place, meaning that we upgrade your 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 as follows:

  • 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 later. If you use the link option on pg_upgrade, then there is no pg_downgrade utility. The only option in that case is a restore from backup, and...