[Qgis-user] oracle spatial driver error on windows xp: ORA-12541

[G. Allegri]

Hi.
I'm trying to use the oracle spatial connector on Windows XP for the
very first time. I've used gvsig until now, but I wanted to test the
ogr's one, being distributed with osgeo4w.
While the server is up and running correctly (many collegues connect
to it with gvsig, arcgis, etc.) I receive the following error when I
test the connection in qgis.

Extended error information:
ORA-12541: TNS: nessun listener
 in <unnamed>

I'm using the latest gdal16-oracle lib. Has anyone encountered this
problem before?
thanks,
giovanni