Book Image

PostgreSQL Administration Cookbook, 9.5/9.6 Edition - Third Edition

Book Image

PostgreSQL Administration Cookbook, 9.5/9.6 Edition - Third Edition

Overview of this book

PostgreSQL is a powerful opensource database management system; now recognized as the expert's choice for a wide range of applications, it has an enviable reputation for performance and stability. PostgreSQL provides an integrated feature set comprising relational database features, object-relational, text search, Geographical Info Systems, analytical tools for big data and JSON/XML document management. Starting with short and simple recipes, you will soon dive into core features, such as configuration, server control, tables, and data. You will tackle a variety of problems a database administrator usually encounters, from creating tables to managing views, from improving performance to securing your database, and from using monitoring tools to using storage engines. Recipes based on important topics such as high availability, concurrency, replication, backup and recovery, as well as diagnostics and troubleshooting are also given special importance. By the end of this book, you will have all the knowledge you need to run, manage, and maintain PostgreSQL efficiently.
Table of Contents (13 chapters)

Collecting regular statistics from pg_stat* views

This recipe describes how to collect the statistics needed to understand what is going on in the database system on a regular basis so that they can be used to further optimize the queries that are slow or are becoming slow as the database changes.

We have included an example extension, called pgstatslog. It can be used to track these changes. The extension works on PostgreSQL 9.1+.

Look at the Using an installed module and Managing installed extensions recipes from Chapter 3, Configuration, for an overview of the extensions infrastructure in PostgreSQL.

Getting ready

Find the pgstatslog directory in the set of files distributed along with this book.

Find out the directory...