Re: robust handling of initial connection with net interfaces down

From: Kris Jurka <books(at)ejurka(dot)com>
To: Adrian Custer <acuster(at)gmail(dot)com>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: robust handling of initial connection with net interfaces down
Date: 2007-04-19 16:15:22
Message-ID: Pine.BSO.4.64.0704191210430.17781@leary.csoft.net
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On Thu, 19 Apr 2007, Adrian Custer wrote:

> i'm trying to make our app's connection to postgresql robust. In
> testing, I've noticed that if the network interfaces don't exist, the
> java instance locks up.
>
> 0.setup the server e.g. localhost:5432, user:auser, password:hello
>
> 1. Take down your network e.g. ifdown lo
>
> 2. run a simple connect to postgresql jdbc such as the file attached
>
> ==> the file hangs indefinitely.
>
> Does anyone have a suggestion for preventing this?
>

The PG driver does not respect DriverManager.getLoginTimeout, although I'm
not sure why. You can instead add the URL parameter ?loginTimeout=5 or
similar to get a timeout on failure to setup a connection.

Kris Jurka

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