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PostgreSQL 10 High Performance

You're reading from   PostgreSQL 10 High Performance Expert techniques for query optimization, high availability, and efficient database maintenance

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Product type Paperback
Published in Apr 2018
Publisher Packt
ISBN-13 9781788474481
Length 508 pages
Edition 3rd Edition
Languages
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Author (1):
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Enrico Pirozzi Enrico Pirozzi
Author Profile Icon Enrico Pirozzi
Enrico Pirozzi
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Table of Contents (18) Chapters Close

Preface 1. PostgreSQL Versions FREE CHAPTER 2. Database Hardware 3. Database Hardware Benchmarking 4. Disk Setup 5. Memory for Database Caching 6. Server Configuration Tuning 7. Routine Maintenance 8. Database Benchmarking 9. Database Indexing 10. Query Optimization 11. Database Activity and Statistics 12. Monitoring and Trending 13. Pooling and Caching 14. Scaling with Replication 15. Partitioning Data 16. Avoiding Common Problems 17. Other Books You May Enjoy

Using a contrib module

While some contrib programs such as pgbench, are directly executable, most are utilities that you install into a database in order to add extra features to them.

As an example, to install the module into a database named abc, the following command line would work (assuming the RedHat location of the file):

$ psql -d abc -f /usr/share/postgresql/contrib/pg_buffercache.sql   

You could instead use the pgAdmin III GUI management utility, which is bundled with the Windows installer for PostgreSQL, instead of the command line:

  1. Navigate to the database you want to install the module into.
  2. Click on the SQL icon in the toolbar to bring up the command editor.
  3. Choose File/Open. Navigate to C:\Program
    Files\PostgreSQL/version/share/contrib/pg_buffercache.sql and open that file.
  4. Execute using either the green arrow or Query/Execute.

You can do a quick test of the module installed on any type of system by running the following quick query:

SELECT * FROM pg_buffercache;  

If any results come back, the module was installed. Note that pg_buffercache will only be installable and usable by database superusers.

You have been reading a chapter from
PostgreSQL 10 High Performance - Third Edition
Published in: Apr 2018
Publisher: Packt
ISBN-13: 9781788474481
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