postgres_locks_query_age.sql

--
--  Author: Hari Sekhon
--  Date: 2020-08-07 00:47:45 +0100 (Fri, 07 Aug 2020)
--
--  vim:ts=4:sts=4:sw=4:et:filetype=sql
--
--  https://github.com/HariSekhon/SQL-scripts
--
--  License: see accompanying Hari Sekhon LICENSE file
--
--  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
--
--  https://www.linkedin.com/in/HariSekhon
--

-- PostgreSQL locks with query and age
--
-- Requires PostgreSQL 9.2+
--
-- Tested on PostgreSQL 9.2+, 10.x, 11.x, 12.x, 13.0

-- https://wiki.postgresql.org/wiki/Lock_Monitoring

SELECT
    a.datname,
    l.relation::regclass,
    l.transactionid,
    l.mode,
    l.GRANTED,
    a.usename,
    a.query,
    a.query_start,
    age(now(), a.query_start) AS "age",
    a.pid
FROM
    pg_stat_activity a
JOIN
    pg_locks l
ON
    l.pid = a.pid
ORDER BY
    a.query_start;