Re: DB transactions when browser freezes

From: Alban Hertroys <haramrae(at)gmail(dot)com>
To: dafNi zaf <dzaf88(at)gmail(dot)com>
Cc: pgsql-general General <pgsql-general(at)postgresql(dot)org>
Subject: Re: DB transactions when browser freezes
Date: 2013-08-08 14:46:06
Message-ID: CAF-3MvPYPb_ecJByjxLcBC-OPM4ay1N5vm1DT8xWZnHU+1oW5A@mail.gmail.com
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On 8 August 2013 16:33, dafNi zaf <dzaf88(at)gmail(dot)com> wrote:

>
> Hello to everybody,
>
> I started to upload (via phpPgAdmin) to a local server a huge file (20GB)
> in
> order to fill up a database.
> The uploding completed and the transactions started. But unfortunately, my
> browser crashed/freezed in the middle of the transactions.
>
> I wanted to know, given that the uploading of the file was completed, will
> the
> transactions keep executing on server??
>
> Before the browser crashed there was a process that consumed 23.6% of the
> CPU for the transactions and now, I see the same process with approximately
> the same percentage.
>
> Should I assume that the transactions keep running?
>
> I am trying to avoid uploading the file all over again because it has
> already been
> running for 5 hours.
>

There is a chance that the database server is just still processing your
request and that it will only figure out that there's a client error once
it reaches the end of that 20GB file, after which the client returns an
error and the database rolls back the transaction.

Depending on how phpPgAdmin/PHP were implemented, that's not necessarily
what'll happen though, so you might just get lucky and the transaction
commits.

Hard to tell, I know nothing about the internals of phpPgAdmin.

What kind of file is it anyway? A database dump perhaps?

--
If you can't see the forest for the trees,
Cut the trees and you'll see there is no forest.

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