Re: Auto-vacuum timing out and preventing connections

Hi,

On 2022-06-27 14:38:21 -0600, David Johansen wrote:
> We're running into an issue where the database can't be connected to. It
> appears that the auto-vacuum is timing out and then that prevents new
> connections from happening. This assumption is based on these logs showing
> up in the logs:
> WARNING:  worker took too long to start; canceled
> The log appears about every 5 minutes and eventually nothing can connect to
> it and it has to be rebooted.

How many databases, tables and functions do you have?


> What can we do to diagnose this problem and get our database working
> reliably again?

Downthread you said you're on RDS - unfortunately you're going to have quite
limited access and are going to have to take it up with AWS.

Greetings,

Andres Freund