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

Watching the longest queries

Another thing of interest that you may want to look for is long-running queries. To get a list of running queries ordered by how long they have been executing, use the following:

SELECT    current_timestamp - query_start AS runtime,    datname, usename, queryFROM pg_stat_activityWHERE state = 'active'ORDER BY 1 DESC;

This will return currently running queries, with the longest running queries in the front.

On busy systems, you may want to limit the set of queries returned to only the first few queries (add LIMIT 10 at the end) or only the queries that have been running over a certain period of time. For example, to get a list of queries that have been running for more than a minute, use this query:

SELECT current_timestamp ...
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