[Chameleon] Chameleon / GDALClose message

Giroux, Denis dgiroux at NRCan.gc.ca
Mon Nov 6 15:45:54 EST 2006


I have migrated (copied) my map viewer from one server (server #1) to another server (server #2) in order to have a backup solution if something goes wrong on server # 1. The map and frame display properly on server # 1.

All the frames, legend and query tools load properly on server # 2, except the map itself. I get a small red cross in IE (vers. 6) or a  small "broken image" in Firefox. By right-clicking on the broken image, I get an URL with some parameters in it. It looks like this: http://issbeta.gsc.nrcan.gc.ca/ms/chameleon//common//wrapper/drawmap.php?map_session_mode=1&run_query=0&sid=454f8fe2ca610&dummy=0.72830100+1162842084&UniqId=1162842087363403

If I copy this URL directly in Firefox, I get the following:     

DAL: GDALClose(/client/gsc_limv/tmp/ms_tmp/116284457128800.img.tmp)

ODBC: EstablishSession(dsnLandslides,,(null))
ODBC: GetColumn() - m_nColCount=500
OGR: OGROpen(ODBC:@dsnLandslides) succeeded (015DBDC0).
OGR: OGROpen(<OGRVRTDataSource><OGRVRTLayer name='Landslides'><SrcDataSource>ODBC:@dsnLandslides</SrcDataSource><SrcSQL>SELECT * FROM dbo_landslides_lsinvmain</SrcSQL><GeometryField encoding='PointFromColumns' x='longitude' y='latitude'/><GeometryType>wkbPoint</GeometryType></OGRVRTLayer></OGRVRTDataSource>) succeeded (015DCB30).
OGR: ReleaseDataSource(<OGRVRTDataSource><OGRVRTLayer name='Landslides'><SrcDataSource>ODBC:@dsnLandslides</SrcDataSource><SrcSQL>SELECT * FROM dbo_landslides_lsinvmain</SrcSQL><GeometryField encoding='PointFromColumns' x='longitude' y='latitude'/><GeometryType>wkbPoint</GeometryType></OGRVRTLayer></OGRVRTDataSource>/015DCB30) dereferenced and now destroying.
OGR: ReleaseDataSource(ODBC:@dsnLandslides/015DBDC0) dereferenced and now destroying.
X-Powered-By: PHP/4.3.9
Last-Modified: Mon, 06 Nov 2006 20:22:50 GMT
Cache-Control: post-check=0, pre-check=0
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-type: image/png


….followed by a very long list of unintelligible numbers and letters, but no map (just the query tools and the legend).

The points on the maps come from an ODBC connection to a MS Access (.mdb) database.
I am on Windows 2003 Server, with IIS 6.0, PHP version 4.3.9, MapScript 4.4.1

Any hints on what could prevent the map from displaying?




Denis Giroux, M.Sc.

GSC Northern Canada / CGC Nord du Canada
Geological Survey of Canada / Commission géologique du Canada
Natural Resources Canada / Ressources naturelles Canada
601 Booth
Local / Room 254  
Ottawa (Ontario)
K1A 0E8

Tel. : (613) 947-1107
Fax : (613) 992-0190

dgiroux at NRCan.gc.ca
Internet: http://gsc.nrcan.gc.ca/

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