mirror of
https://github.com/RealOrangeOne/notes.git
synced 2024-11-17 08:29:05 +00:00
39 lines
761 B
Markdown
39 lines
761 B
Markdown
|
---
|
||
|
|
title: Find and kill long running queries
|
||
|
|
tags:
|
||
|
|
- PostgreSQL
|
||
|
|
link: https://medium.com/little-programming-joys/finding-and-killing-long-running-queries-on-postgres-7c4f0449e86d
|
||
|
|
---
|
||
|
|
|
||
|
|
# Running queries
|
||
|
|
|
||
|
|
View a list of queries running longer than 5 minutes:
|
||
|
|
|
||
|
|
```sql
|
||
|
|
SELECT
|
||
|
|
pid,
|
||
|
|
now() - pg_stat_activity.query_start AS duration,
|
||
|
|
query,
|
||
|
|
state
|
||
|
|
FROM pg_stat_activity
|
||
|
|
WHERE (now() - pg_stat_activity.query_start) > interval '5 minutes';
|
||
|
|
```
|
||
|
|
|
||
|
|
Also see [running queries](../running-queries).
|
||
|
|
|
||
|
|
# Stopping a given connection
|
||
|
|
|
||
|
|
```sql
|
||
|
|
SELECT pg_cancel_backend(pid);
|
||
|
|
```
|
||
|
|
|
||
|
|
`pid` being the relevant value from `pg_stat_activity.pid`.
|
||
|
|
|
||
|
|
# Killing a given connection
|
||
|
|
|
||
|
|
```sql
|
||
|
|
SELECT pg_terminate_backend(pid);
|
||
|
|
```
|
||
|
|
|
||
|
|
Should be avoided, as it's synonymous with `kill -9`.
|