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PostgreSQL Administration Cookbook, 9.5/9.6 Edition

You're reading from   PostgreSQL Administration Cookbook, 9.5/9.6 Edition Effective database management for administrators

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Product type Paperback
Published in Apr 2017
Publisher
ISBN-13 9781785883187
Length 556 pages
Edition 3rd Edition
Languages
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Authors (4):
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Gianni Ciolli Gianni Ciolli
Author Profile Icon Gianni Ciolli
Gianni Ciolli
Hannu Krosing Hannu Krosing
Author Profile Icon Hannu Krosing
Hannu Krosing
Gabriele Bartolini Gabriele Bartolini
Author Profile Icon Gabriele Bartolini
Gabriele Bartolini
Simon Riggs Simon Riggs
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Simon Riggs
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Toc

Table of Contents (13) Chapters Close

Preface 1. First Steps FREE CHAPTER 2. Exploring the Database 3. Configuration 4. Server Control 5. Tables and Data 6. Security 7. Database Administration 8. Monitoring and Diagnosis 9. Regular Maintenance 10. Performance and Concurrency 11. Backup and Recovery 12. Replication and Upgrades

Major upgrades in-place

PostgreSQL provides an additional supplied program, called pg_upgrade, which allows you to migrate between major releases, such as from 9.1 to 9.2; 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...
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