Book Image

PostgreSQL 11 Administration Cookbook

By : Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala
Book Image

PostgreSQL 11 Administration Cookbook

By: Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala

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 11 allows you to scale up your PostgreSQL infrastructure. This book takes a step-by-step, recipe-based approach to effective PostgreSQL administration. The book will introduce you to new features such as logical replication, native table partitioning, additional query parallelism, and much more to help you to understand and control, crash recovery and plan backups. You will learn how to tackle a variety of problems and pain points for any database administrator such as creating tables, managing views, improving performance, and securing your database. As you make steady progress, the book will draw attention to important topics such as monitoring roles, backup, and recovery of your PostgreSQL 11 database to help you understand roles and produce a summary of log files, ensuring high availability, concurrency, and replication. By the end of this book, you will have the necessary knowledge to manage your PostgreSQL 11 database efficiently.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
About Packt

Accessing objects in other PostgreSQL databases

Sometimes, you may want to access data in other PostgreSQL databases. The reasons may be as follows:

  • You have more than one database server, and you need to extract data (such as reference) from one server and load it into the other.
  • You want to access data that is in a different database on the same database server, which was split for administrative purposes.
  • You want to perform some changes that you do not wish to rollback in the event of an error or transaction abort. These are known as function side effects or autonomous transactions.

You might also be considering this because you are exploring the scale out, sharding, or load balancing approaches. If so, read the last part of this recipe, the See also section, and then skip to Chapter 12, Replication and Upgrades.


PostgreSQL includes two separate mechanisms for accessing external PostgreSQL databases: dblink and the PostgreSQL Foreign Data  Wrapper. The latter is more efficient and implements...