GeoRasterException: -13463 .. even after creating DML trigger

Hi all
i am getting the following exception :
oracle.spatial.georaster.GeoRasterException: -13463;GeoRaster object with rasterId = 281, rdt = null not found in system data view.
Please create DML trigger for its table and column. Do:
sdo_geor_utl.createDMLTrigger('tableName','columnName')
at oracle.spatial.georaster.JGeoRaster.getRasterSubset_NoComp(JGeoRaster.java:1001)
at oracle.spatial.georaster.JGeoRaster.getRasterSubset(JGeoRaster.java:798)
at oracle.spatial.georaster.JGeoRaster.getRasterImage(JGeoRaster.java:2510)
at oracle.spatial.georaster.JGeoRaster.getRasterImage(JGeoRaster.java:2038)
at spdb.SpatialQuery.getRaster(SpatialQuery.java:68)
at spdb.SpatialQuery.main(SpatialQuery.java:91)
I have created the DML trigger using
sdo_geor_utl.createDMLTrigger('IMGTABLE','RASTER');
but still i keep getting the same error
what am i doing wrong
THanks

AB,
about your application, please consider these:
If your original images are seamlessly mosaickable, it's better to mosaick them into one large image and then query. Note, the requirement from the oracle 10g sdo_geor.mosaic is very strict.
But I guess, in most apps, this is not practical. So, you have to query multiple images and do some work in your app. The approach could be:
1. Since your images are all georeferenced, call sdo_geor.generateSpatialExtent and populate the spatial extent for all images. Then build a spatial index (RTree) on the georaster table based on the spatial extents. Note, If the georaster objects have different model spaces, you need call sdo_cs.transform to convert the extents to the same SRID. You can also directly update the spatial extents using a right/appropriate geometry.
2. Spatially query the GeoRaster table using your area-of-interest geometry in a single sql stmt to filter out all the georaster objects which overlap or partially overlap your AOI.
3. call getRasterSubset on each georaster object of the above result set with a proper window.
4. the BLOBs returned by getrastersubset don't have any metadata inside them, but you can easily and precisely figure out their dimension sizes, cell depth, interleaving etc based on the metadata of the georaster objects as well as your query criteria (i.e., band numbers, window sizes and pyramid levels).
5. get all blobs into your app. then you can either directly work on them, such as mosaick them into one image for display, OR you can generate RenderedImages (very easy to do thru JAI) and directly display them into one image (ie, simply render the images in a window) or call JAI rotate/tranform/mosaic to create a single image.
The above approach has been done in many of our partner products, such as PCI FOCUS and Geomatica, Leica ERDAS Imagine and LPS.
In addition, Oracle Applicattion Server MapViewer has this capability as well, which you might consider to use.
Hope this helps.
Best Regards,
Jeffrey

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