Skip to Content
PostgreSQL 10 Administration Cookbook - Fourth Edition
book

PostgreSQL 10 Administration Cookbook - Fourth Edition

by Simon Riggs, Gianni Ciolli
May 2018
Intermediate to advanced content levelIntermediate to advanced
576 pages
30h 25m
English
Packt Publishing
Content preview from PostgreSQL 10 Administration Cookbook - Fourth Edition

How to do it…

First, analyze your database using this code:

db_01=# analyse;ANALYZETime: 6231.313 msdb_01=#

This is the first thing to try, as it is usually cheap and is meant to be done quite often anyway.

If this restores the query's performance or at least improves the current performance considerably, then it means that autovacuum is not doing its task well, and the next thing to do is to find out why.

You must ensure that the performance improvement is not due to caching of the pages required by the requested query. Make sure that you repeat your query several times before classifying it as slow. Looking at pg_stat_statements (which is covered later in this chapter) can help you analyze the impact of a particular query in terms of caching, ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

PostgreSQL 13 Cookbook

PostgreSQL 13 Cookbook

Vallarapu Naga Avinash Kumar
PostgreSQL 9 Administration Cookbook - Second Edition

PostgreSQL 9 Administration Cookbook - Second Edition

Simon Riggs, GIANNI CIOLLI, Hannu Krosing, Gabriele Bartolini

Publisher Resources

ISBN: 9781788474924Supplemental Content