[Mapserver-users] open failed ogr connection

Andreas Koeberle koeberle at fh-nb.de
Fri May 14 05:45:57 EDT 2004

Hi Frank,
I try it with a newer version that I found in the listarchive 
(http://www.maptools.org/dl/mapserver-4.1-dev-win32-php4.3.4.zip). These 
version seems to work with the gdal12.dll (2 April 2004). But I got the 
same error with mapserver and shp2img. I use a system DNS to my ODBC 

Frank Warmerdam schrieb:

> Andreas Koeberle wrote:
>> Hi
>> I try do use a access database as a source for a point layer. I check 
>> the ovf  file with the ogrinfo like describe in the wiki and the file 
>> seems to work. But when I try do use with the mapserver the following 
>> message  appear:
>> msOGRFileOpen(): OGR error. Open failed for OGR connection
>> `virtuallayer.ovf'. File not found or unsupported format
> Andreas,
> The most obvious and likely problems are:
>  1) out of date mapserver build with old OGR ODBC code.
>  2) you are using a user DSN instead of a system DSN.
>  3) the "web user" does not have permission on the database in question.
>  4) wrong path to virtuallayer.ovf
> To rule out the first item, try running "shp2img" on your map as yourself
> and see if that works.
> eg.
> shp2img -m your.map -o out.png
> If that works fine then it is a difference in what is accessable in the
> web context compared to running logged in as yourself.
> Good luck,

Andreas Köberle

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