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)

Setting parameters for particular groups of users

PostgreSQL supports a variety of ways of defining parameter settings for various user groups. This is very convenient, especially to manage user groups that have different requirements.

How to do it...

For all users in the saas database, use the following commands:

ALTER DATABASE saas
SET configuration_parameter = value1;

For a user named simon connected to any database, use this:

ALTER ROLE Simon
SET configuration_parameter = value2;

Alternatively, you can set a parameter for a user only when connected to a specific database, as follows:

ALTER ROLE Simon
IN DATABASE saas
SET configuration_parameter = value3;

The user won't know that these have been executed specifically for...