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Mastering PostgreSQL 15 - Fifth Edition

You're reading from Mastering PostgreSQL 15 - Fifth Edition

Product type Book

Published in Jan 2023

Publisher Packt

ISBN-13 9781803248349

Pages 522 pages

Edition 5th Edition

Languages

Concepts

Robotic Process Automation

Author (1):

Hans-Jürgen Schönig

Table of Contents (16) Chapters

Preface

1. Chapter 1: PostgreSQL 15 Overview

2. Chapter 2: Understanding Transactions and Locking

3. Chapter 3: Making Use of Indexes

4. Chapter 4: Handling Advanced SQL

5. Chapter 5: Log Files and System Statistics

6. Chapter 6: Optimizing Queries for Good Performance

7. Chapter 7: Writing Stored Procedures

8. Chapter 8: Managing PostgreSQL Security

9. Chapter 9: Handling Backup and Recovery

10. Chapter 10: Making Sense of Backups and Replication

11. Chapter 11: Deciding on Useful Extensions

12. Chapter 12: Troubleshooting PostgreSQL

13. Chapter 13: Migrating to PostgreSQL

14. Index

Why subscribe?

15. Other Books You May Enjoy

Moving from Oracle to PostgreSQL

So far, we have seen how the most important advanced SQL features can be ported or used in PostgreSQL. Given this introduction, it is time to take a look at migrating Oracle database systems in particular.

These days, migrating from Oracle to PostgreSQL has become really popular due to Oracle’s new license and business policy. Around the world, people are moving away from Oracle and adopting PostgreSQL.

Using the oracle_fdw extension to move data

One of my preferred methods to move users from Oracle to PostgreSQL is Laurenz Albe’s oracle_fdw extension (https://github.com/laurenz/oracle_fdw). It is a foreign data wrapper (FDW) that allows you to represent a table in Oracle as a table in PostgreSQL. The oracle_fdw extension is one of the most sophisticated FDWs and is rock solid, well-documented, free, and open source.

Installing the oracle_fdw extension requires you to install the Oracle client library. Fortunately, there are...

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Authors (1)

Hans-Jürgen Schönig

Hans-Jürgen Schönig has 20 years' experience with PostgreSQL. He is the CEO of a PostgreSQL consulting and support company called CYBERTEC PostgreSQL International GmbH. It has successfully served countless customers around the globe. Before founding CYBERTEC PostgreSQL International GmbH in 2000, he worked as a database developer at a private research company that focused on the Austrian labor market, where he primarily worked on data mining and forecast models. He has also written several books about PostgreSQL.

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