I have a mapserver map file with many ArcSDE layers defined in it and am calling this via a WMS client. For many layers (point and polygon), the GetFeatureInfo request works correctly, returning a GML string with the one or many results.
For a number of layers however, both point and polygon, I am getting one of two different errors. In some cases, the feature(s) returned are nowhere near the point clicked, even though the BBOX coordinates included in the request are correct. eg for the request: http://203.21.120.26/cgi-bin/mapserv? map=amsis.map&VERSION=1.0.0&SERVICE=WFS&REQUEST=GetFeature&MAXFEATURES=100&O UTPUTFORMAT=GML2&TYPENAME=PETROLEUMWELLS&BBOX=119.7781007751938,- 17.236434108527135,119.88791989664084,-17.126614987080103 the return is: <?xml version='1.0' encoding="ISO-8859-1" ?><wfs:FeatureCollection xmlns:myns="http://www.ttt.org/myns" xmlns:wfs="http://www.opengis.net/wfs" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengeospatial.net/wfs/1.0.0/WFS- basic.xsd http://www.ttt.org/myns http://203.21.120.26/cgi-bin/mapserv? map=amsis.map&SERVICE=WFS&VERSION=1.0.0&REQUEST=DescribeFeatureT ype&TYPENAME=PETROLEUMWELLS&OUTPUTFORMAT=XMLSCHEMA"> <gml:boundedBy> <gml:Box srsName="EPSG:4326"> <gml:coordinates>119.822556,-17.166944 119.822556,- 17.166944</gml:coordinates> </gml:Box> </gml:boundedBy> <gml:featureMember> <myns:PETROLEUMWELLS> <gml:boundedBy> <gml:Box srsName="EPSG:4326"> <gml:coordinates>144.671667,-8.282500 144.671667,- 8.282500</gml:coordinates> </gml:Box> </gml:boundedBy> <myns:msGeometry> <gml:Point srsName="EPSG:4326"> <gml:coordinates>144.671667,- 8.282500</gml:coordinates> </gml:Point> </myns:msGeometry> <myns:OBJECTID>595</myns:OBJECTID> <myns:FEATURETYPE>Petroleum Well</myns:FEATURETYPE> <myns:ENO>10567</myns:ENO> <myns:WELL>Dibiri 1A</myns:WELL> <myns:TOTALDEPTH>4895</myns:TOTALDEPTH> <myns:STATUS>Dry</myns:STATUS> <myns:OPERATOR>Phillips Aust Oil Co</myns:OPERATOR> <myns:CONTRACTOR></myns:CONTRACTOR> <myns:TITLE></myns:TITLE> <myns:SHORE></myns:SHORE> <myns:FIELD></myns:FIELD> <myns:WELLTYPE></myns:WELLTYPE> <myns:ELEVATION>&lt;null&gt;</myns:ELEVATION> <myns:SOURCE>Geoscience Australia</myns:SOURCE> <myns:SCALE>10000000</myns:SCALE> <myns:ACCURACYESTIMATE>0</myns:ACCURACYESTIMATE> <myns:DATACURRENCY>00:00:00 05/25/2005</myns:DATACURRENCY> <myns:UPDATEFREQUENCY>5</myns:UPDATEFREQUENCY> <myns:CREATIONDATE>&lt;null&gt;</myns:CREATIONDATE> <myns:RETIREMENTDATE>&lt;null&gt;</myns:RETIREMENTDATE> <myns:PID>&lt;null&gt;</myns:PID> <myns:SYMBOL>0</myns:SYMBOL> <myns:SHAPE>&lt;shape&gt;</myns:SHAPE> <myns:SE_ROW_ID>561</myns:SE_ROW_ID> </myns:PETROLEUMWELLS> </gml:featureMember></wfs:FeatureCollection> You can see the gml:boundedBy box coordinates match the request BBOX coordinates but the returned feature is in a totally different place. If I query this ArcSDE layer from a client like ArcMap it works correctly. Note that if I export the ArcSDE layer to a shapefile and use that with mapserver, the result is also correct. Possibly related, some polygon layers also fail, although the symptoms are different. In that case I get a truncated return GML string such as: <?xml version="1.0" encoding="ISO-8859-1"?><msGMLOutput xmlns:gml="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <PETROLEUMACREAGERELEASE_layer> which would appear to indicate that the process terminated abnormally mid request but if I use a debug-enabled version of mapserver I don't see any error message. Again, exported to shapefiles the request works correctly. Note that in both cases if I use a WFS GETFEATURE in place of the WMS GetFeatureInfo I get similar errors. Can anyone help?