500 Internal Server Errors

[Luis Treviño]

Roland:

Could be the "DATA" sql statement on your map file. It would be easier if
you can show part of your map file that involves the postgis layer.

Regards,
Luis


2006/7/12, Roland Martin <roland.w.martin at gmail.com>:
>
> OK, this is probably yet another stupid query to which I should know the
> answer... however, I'm on a roll here.
>
> I've got an application which is intermittently (i.e. most of the time,
> but not always) throwing a 500 Internal Server Error. The application is
> almost a direct clone of another which does not exhibit the same error.
>
> I've spent most of the afternoon trying to figure out why this might be,
> and as far as I can tell, it's something to do with the PostGIS database
> which holds most of the data. If I remove all the PostGIS layers, it seems
> to work fine (although interestingly doesn't work if they're all in the map
> file but turned off - does MapScript try to load the layers regardless?)
>
> The database contains converted CAD (DWG) data with typically stupid
> contents (meaningless fields, escape characters, etc). I wondered if it
> might be to do with the sizes of the tables (>30 000 records in each), but
> dissolving them doesn't seem to have made much difference. At the moment I'm
> leaning towards thinking it may be because of the aforementioned escape
> characters (looking down the tables, a number just contain the entry " which
> might upset things; others start with an asterisk). However, some of the
> tables causing the issue don't contain anything nearly as nasty.
>
> The error is being thrown on loading the map; approximately 80-90% of the
> time.
>
> Also of interest may be the following gunk from the error logs:
> [Wed Jul 12 16:29:11 2006] [error] [client x] Premature end of script
> headers: php-cgi.exe, referer: http://x/lbia_dev/
> [Wed Jul 12 16:51:08 2006] [error] [client x] Premature end of script
> headers: php-cgi.exe, referer: http://x/lbia_dev/
> (etc)
>
> Anyone have any thoughts on this?
>
> Ta,
> Roland.
>
>
> MS4W 2.0
> MapServer 4.8.3
> Chameleon for MS4W 2.4
> PgSQL 8.1
> etc 1.0
>
>
>
> --
> Please note my new email address. Use other addresses at your peril.
>
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