Re: vacuumdb not letting me connect to db

There is no error message, when I try to connect the database while running
vacuumdb with 300 jobs, it gets stuck.

On Thursday, February 4, 2021, Ron <ronljohnsonjr(at)gmail(dot)com> wrote:

> On 2/4/21 5:26 AM, Atul Kumar wrote:
>
> Hi,
>
> I have 160 GB of RAM, postgres 9.6 is running on the server.
>
> after upgrade I ran the below command:
>
> "/usr/edb/as9.6/bin/vacuumdb" -U 'enterprisedb' --verbose --all -j 300
> --analyze-only
>
> after running that command I was not able to connect the database
> using psql for few minutes.
>
>
> What's the exact error message?
>
> After 20-30 minutes i was able to connect to the db and at that time I
> checked the pg_stst_activity, the active connections was reduced to
> 27.
>
> my max_connections is set to 700.
>
> I tried to find out the reason for not being abled to connect the db
> (when 300 jobs were running) but still not got the answer. So
>
>
> Connect to the cluster *before* running "vacuumdb -j300", and start
> looking at pg_stst_activity while vacuumdb is running.
>
> --
> Angular momentum makes the world go 'round.
>