[mapserver-users] How to render raster data using Oracle Georaster?

xxj 2001xxj at gmail.com
Thu Dec 31 05:38:32 EST 2009


Hi folks,

Is Oracle Georaster supported by MapServer?

I am using MapServer5.6.0 and can render vector data using Oracle
successfully. But when I was trying raster data using Oracle database, the
following errors happens.

Errors:

<?xml version='1.0' encoding="ISO-8859-1" standalone="no" ?>
<!DOCTYPE ServiceExceptionReport SYSTEM
"http://schemas.opengis.net/wms/1.1.1/exception_1_1_1.dtd">
<ServiceExceptionReport version="1.1.1">
<ServiceException>
msDrawMap(): Image handling error. Failed to draw layer named
&#39;bluemarble&#39;.
msDrawRaster(): Unable to access file.
georaster:wz/wz at orclat18,sf_rasters,georaster,georid=101 using full path
georaster:wz/wz at orclat18,sf_rasters,georaster,georid=101
</ServiceException>
</ServiceExceptionReport>

My layer definition in mapfile is as following:

LAYER
    NAME bluemarble
    TYPE raster
    STATUS ON
    #CONNECTIONTYPE oraclespatial
    #CONNECTION "wz/wz at orclat18"
    #DATA "geor:wz/wz at orclat18,student_rdt_01,id=1" 
    DATA "georaster:wz/wz at orclat18,sf_rasters,georaster,georid=101"
    #DATA drgncimq1926.tif
    #DATA "georaster from sf_rasters using srid 8307" 
    #DATA "GEOR:temporary.vrt"
    CLASS
      EXPRESSION ([pixel] >= 0 AND [pixel] <= 1000)
      STYLE
        COLOR 255 0 0
      END
    END
    METADATA
      WMS_TITLE "bluemarble"
      WMS_ABSTRACT "bluemarble."
      WMS_SRS "EPSG:4326"
    END
END

I am very sure that GDAL and GeoRaster are compiled into MapServer and well
configured for the belows are the output about them.

Output of mapserv:

[oracle at ts cgi-bin]$ ./mapserv -v
./mapserv: /usr/lib/libxml2.so.2: no version information available (required
by ./mapserv)
MapServer version 5.6.0 OUTPUT=GIF OUTPUT=PNG OUTPUT=WBMP OUTPUT=SVG
SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=ICONV
SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER
SUPPORTS=WCS_SERVER INPUT=EPPL7 INPUT=ORACLESPATIAL INPUT=OGR INPUT=GDAL
INPUT=SHAPEFILE

Output of gdal_translate:

[oracle at ts cgi-bin]$ gdal_translate |grep Geo
  GTiff: GeoTIFF
  GeoRaster: Oracle Spatial GeoRaster

I have ever tried to confirm that if gdal is OK by executing the command of 
"gdal_translate -of gtiff
geor:wz/wz at orclat18,sf_rasters,georaster,georid=101 bluemarble.tiff -outsize
100% 100%"
 in the command line. And found it's OK, the expected picture file was
returned.

I am so confused by the errors above now! So I wonder how to render raster
data with Oracle and GDAL on MapServer?

Thanks!

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