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Following functions exist in Oracle: SDO_CS.MAP_EPSG_SRID_TO_ORACLE SDO_CS.MAP_ORACLE_SRID_TO_EPSG So SELECT SDO_CS.MAP_ORACLE_SRID_TO_EPSG(xxx) FROM dual; yields: 90112 -> null 327680 -> 31300 8307 -> 4326 (Weird that 90112 isn't mapped...)


I started down a similar path with Shape2SQL, but now I am using the Natural Earth shape files - they are great and cover all countries down to an incredible level of detail (railroads!): http://www.naturalearthdata.com Laurent Dupuis has shared his amazing project which shreds ALL of the natural earth data (including all the dbf attributes) straight from ...


Here is the source to the underlying Java library, prj2epsg, used behind the scenes on the webpage you list. Basically, it uses a Lucene index to get the best match between the WKT in your prj file and an underlying EPSG. As AndreJ has already said, this may not be 100% perfect, but Lucene excels at partial/fuzzy matching. gdalsrsinfo might be easier to get ...


There is no such tool working 100% perfectly, because there are many EPSG codes that share the same projection parameters. You can run gdalsrsinfo on any Geotiff or shapefile .prj file to get the proj string out of the definition. For some intelligent ways of guessing, follow the answers given here: Identifying Coordinate System of Shapefile when Unknown? ...

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