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Mastering PostgreSQL 10

You're reading from   Mastering PostgreSQL 10 Expert techniques on PostgreSQL 10 development and administration

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788472296
Length 428 pages
Edition 1st Edition
Languages
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Author (1):
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Hans-Jürgen Schönig Hans-Jürgen Schönig
Author Profile Icon Hans-Jürgen Schönig
Hans-Jürgen Schönig
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Table of Contents (15) Chapters Close

Preface 1. PostgreSQL Overview 2. Understanding Transactions and Locking FREE CHAPTER 3. Making Use of Indexes 4. Handling Advanced SQL 5. Log Files and System Statistics 6. Optimizing Queries for Good Performance 7. Writing Stored Procedures 8. Managing PostgreSQL Security 9. Handling Backup and Recovery 10. Making Sense of Backups and Replication 11. Deciding on Useful Extensions 12. Troubleshooting PostgreSQL 13. Migrating to PostgreSQL 14. Other Books You May Enjoy

Replaying backups

Having a backup is pointless unless you have tried to actually replay it. Fortunately, it is easy to do. If you have created a plain text backup, you can simply take the SQL file and execute it:

psql your_db < your_file.sql
A plain text backup is simply a text file containing everything. You can always simply replay a text file. 

If you have decided on a custom format or directory format, you can use pg_restore to replay the backup. pg_restore allows you to do all kinds of fancy things such as replaying just part of a database and so on. In most cases, however, you will simply replay the entire database. In my example, I will create an empty database and just replay a custom format dump:

[hs@linuxpc backup]$ createdb new_db
[hs@linuxpc backup]$ pg_restore -d new_db -j 4 /tmp/dump.fc  

Note that pg_restore will add data to an existing database. If your database...

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