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Current Oracle Spatial Blog Articles

    Using Oracle's ST_GEOMETRY type hierarchy with SDO_GEOMETRY: ST_PointN and ST_NumPoints
    Making Sdo Geometry Metadata
    SC4O Test log
    The Frontage Problem: Creating references from land parcel street frontage boundary to point in street
    Scheduling the Export of Spatial Data in Oracle to a Shapefile each night
    Oracle CENTROID package update
    Book: "Applying And Extending Oracle Spatial"
    Create Polygons and Linestrings From Bearings And Distances (COGO)
    Simple Implementation Of Travelling Salesman Problem
    ST_Densify for Object PLSQL
    PLSQL ST_AsEWKT and ST_FromWKT Functions For Oracle (any version)
    Useful Package of Wrapper Functions for Sdo_Util.AffineTransforms
    GeoRaptor 4.x Update 2 (Project has Stalled)
    Tip: Drop that Spatial Index!
    Convert Single Geometry to Multi-part Geometry in Oracle Spatial
    Optimized Rectangle to 5 Point Polygon
    Centroid Package now supports Y ordinate seeding
    Convert GeoJSON document to Sdo_Geometry objects
    Function That Returns a Compass Point From a Whole Circle Bearing
    Playing around with Centroids by using different seed values
    Simple Oracle C Sprintf or Java String.format
    Some Oriented Point Functions
    Extracting Inner Rings Changed Ordinate Ordering: A Trap For Players Who Don't Read Documentation!
    PLS-00306: wrong number or types of arguments in call to 'SDO_GEOMETRY'
    Converting Google Earth Formatted Longitude/Latitude points to decimal degrees
    Oracle Business Intelligence Warehousing and Analytics - Spatial Summit
    How far inside, is inside? Measuring actual distance.
    Noding and building a polygon from single, overlapping linestrings
    Analyzing Spatial Query Performance Improvements in Oracle Spatial and Graph 12c Through Cross-Vendor Comparison
    ST_VertexN / ST_PointN - Extracting a specific point from any geometry
    Convert Single Point stored in SDO_ORDINATES to SDO_POINT_TYPE
    Aggregate APPEND Islands and XOR polygons
    Circular Arcs in Geodetic Polygons
    Some SDO_GEOMETRY/DIMINFO handling functions
    Changing all DIMINFO sdo_tolerance values for all metadata records in one go.
    Building Polygons from Incomplete Linestrings using ST_PolygonBuilder
    Computing Cardinal Directions to nearby geometries
    Intersecting two aggregated polygon layers with SC4O
    Spatial and Oracle 12c
    Update Triggers and SDO_GEOMETRY Equality
    Duplicate Geometry data and Data Models
    CENTROID package update
    How to calculate cumulative length of a linestring
    Compute Location from known Lat/Long point using delta easting and northing in miles
    Sorting SDO_GEOMETRY data using the ORDER BY clause of a SELECT statement
    Creating linestrings from points
    Rounding Coordinates or Ordinates in SDO_GEOMETRY
    Effects of Sdo_Geometry Ordinate Precision on Performance
    Effects of Sdo_Geometry Ordinate Precision on Storage
    The Spatial filtering of geometries: The effect of tolerances on relationships
    Application of Delaunay Triangulation and Inverse Distance Weighting (IDW) in Oracle for Soils Interpolation
    Selecting all SDO_GTYPE values for all tables/sdo_geometry columns in a schema
    CENTROID package - Tips for Use
    Announcing the Spatial Companion For Oracle (SC4O)
    Filtering Rings (Oracle Spatial)
    Splitting a polygon using one or more linestrings
    isValid, isSimple, Dimension and CoordDim methods for SDO_Geometry
    Line Merging or Collecting lines together: ST_LineMerger
    ST_DeleteVertex for Oracle SDO_Geometry based on Jaspa/JTS
    3D/4D and SRID aware Conversion functions for SDO_Geometry: WKT and EWKT
    Topological vs Non-Topological Simplification/Generalization of Aggregated Area Geometies in Oracle
    Filtering very short linestrings via bitmap function index
    CENTROID For Oracle
    Gridding a sdo_geometry line/polygon object (Oracle)
    Finding centre and radius of a circular geometry
    Constraining geometry type for sdo_geometry column in a table.
    CASE Statements and SDO_GEOMETRY
    The Power of Constraints and Indexes for Spatial Constraints: stopping duplicate points
    Replacement for SDO_GEOM.RELATE - ST_Relate based on JTS
    Changing Oracle Spatial Index Parameters on existing index
    Writing Excel Spreadsheets files from within the Oracle database using Java and PL/SQL
    Writing xSV (eg csv) files from within the Oracle database using Java and PL/SQL
    A simple spike finder for Spatial/Locator
    JTS Java class compilation for 11g and above
    Random Spatial Search Procedure
    Geometry Snapping using JTS in Oracle
    Exposing JTS's MinimumBoundingCircle functionality
    Exposing JTS's Densifier functionality
    Using JTS's Comparison Functions - HausdorffSimilarityMeasure & AreaSimilarityMeasure with SDO_GEOMETRY
    Free JTS-based Area/Length Functions
    Handy way of systematically fixing polygon geometries with 13349 and other errors
    Standalone CENTROID package now available for download
    Free Union, Intersection, Xor and Difference Functions for Oracle Locator - Part 4 Processing Geodetic data
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    Free Union, Intersection, Xor and Difference Functions for Oracle Locator - Part 3
    Free Union, Intersection, Xor and Difference Functions for Oracle Locator - Part 2
    Free Union, Intersection, Xor and Difference Functions for Oracle Locator - Part 1
    Building Lines into Polygons in Oracle Locator / Spatial
    Finding Intersection Points between Line and Polygon
    Free version of sdo_length
    Alternative to my SQL based GetNumRings function
    External Tables and SDO_Geometry data.
    layer_gtype keyword issue when indexing linear data on 11g
    String Tokenizer for Oracle
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    Oracle Spatial DISJOINT search/filtering
    Creating SDO_Geometry from geometric data recorded in the columns of a table
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    Projecting SDO_GEOM_METADATA DIMINFO XY ordinates
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    Performance of PL/SQL Functions using SQL vs Pure Code
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    Extract Polygons from Compound Polygon
    Detecting sdo_geometries with compound (3-point Arcs) segments
    GEOMETRY_COLUMNS for Oracle Spatial
    Convert GML to SDO_Geometry in Oracle 10gR2
    Spatial Sorting of Data via Morton Key
    Swapping Ordinates in an SDO_GEOMETRY object
    New To_3D Function
    Extend (Reduce/Contract/Skrink) Function for Oracle
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    Loading Spatial Data from an external CSV file in Oracle
    Calling the Oracle Spatial shapefile loader from within the Oracle database itself
    Implementing SDO_VertexUpdate/ST_VertexUpdate for Oracle
    Implementing SDO_RemovePoint/ST_RemovePoint for Oracle
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    Loading Shapefiles (SHP) into Oracle Spatial
    Oracle Spatial Mapping and Map Rendering Performance Tips
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    Oracle Spatial Forum - Melbourne April 2007
    Layer_GTypes for spatial indexes
    Oracle's SQL/MM Compliant Types
    Tips and Tricks



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All Blog Articles, Data Models and Free Source Code by Simon Greener, The SpatialDB Advisor is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

Loading Shapefiles (SHP) into Oracle Spatial

Friday June 08 2007 at 10:38

When working with SHP files be aware that polygon data with holes or multi-part polygons (with/without hole) can often have holes (2003) and multi-parts (1003) with the wrong rotation. Wrong rotation is for outer shells (1003) that means Clockwise as against Clockwise and for inner shells or holes (2003) this means anti-clockwise when they should be clockwise. Many shape to Oracle loading tools will not correct this (not even MapBuilder’s shapefile loader). So, unless you know that your loader is correcting the rotation I would run MDSYS.SDO_GEOM.SDO_UNION against the loaded polygons to ensure that they are correct.

So, after loading, if multi-part polygons (sdo_gtype X007) are appearing as single-part polygons (sdo_gtype x003) with sdo_elem_info showing the disparate parts appearing as holes (2003 when they should be 1003), then do this:

update <my_table> a
   set a.<geom_column> = mdsys.sdo_geom.sdo_union(a.<geom_column>,a.<geom_column>,<your tolerance>);

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Comment [8]


I want to load the shape file in oracle . please suggets me . how can I do it . I have used the tool to shp2sdo for converting and omportind data in oarcle but when i Ran it it return “Error in converting control file ”

Thanking you.

Anurag SIngh · 2 July 2007, 13:51 · #


There are a few different methods depending on what client technology you have.

1. Oracle’s sqlldr pre-processors shp2sdo but you have seen and tried that. Post the control file error to the Oracle Spatial forum for a fix to your problem.

2. If you want a pure Oracle based approach download the free MapBuilder Java application from Oracle Technology Network

MapBuilder is for creating and populating the metadata tables that Oracle’s MapViewer uses for styling and rendering geometry data.

If you have some $$ to spend:

3. Purchase a copy of Manifold GIS Enterprise Edition and use it to load your data. It is excellent value and can help you load data from other formats other than shapefiles. It will even load GeoRaster data from imagery.

4. Try the excellent Spatial Console from Geometry

5. FME from Safe Software is the Swiss Army knife of spatial data manipulation but it is very expensive.

I haven’t tried many of the open source products of late but one that can help is the ogr2ogr command line tool which is a part of Frank Warmerdam’s FWTools free download.

Hope this helps get you started….


Simon · 2 July 2007, 22:55 · #

Simon, the SDO_MIGRATE.TO_CURRENT procedure does what you are talking about here with regards to rotation etc. Hope all is well.

— Justin · 6 July 2007, 21:42 · #


You are right to mention sdo_migrate.to_current as a solution to the problem. However, it will not fix all the problems that wrongly oriented polygon data in shapefiles present to the Oracle Spatialist.

Here is my test:

drop table test;
create table test( geom sdo_geometry );
insert into test values(sdo_geometry(2003,null,null,sdo_elem_info_array(1,1003,1),sdo_ordinate_array(1,1, 1,2, 2,2, 2, 1, 1,1 )));
insert into user_sdo_geom_metadata (table_name, column_name, srid, diminfo)
select sdo_geom.validate_geometry(a.geom,0.05) from test a ;
execute sdo_migrate.to_current(‘TEST’,’GEOM’,10);
select sdo_geom.validate_geometry(a.geom,0.05) from test a ;
delete from user_sdo_geom_metadata where table_name = ‘TEST’ and column_name = ‘GEOM’;
Drop table test;

The first sdo_geom.validate_geometry treturned 13369 (wrong rotation); the second TRUE.

However, if the shapefile contained a shape with a multipolygon object with two shells with the wrong rotation sdo_migrate.to_current does not fix the problem. Only a self-union using sdo_geom. As can be shown by this extra bit of testing:

drop table test;
create table test( geom sdo_geometry );
insert into test values(sdo_geometry(2003,null,null,sdo_elem_info_array(1,1003,1, 11, 1003, 1),sdo_ordinate_array(1,1, 1,2, 2,2, 2, 1, 1,1, 1.2,1.2, 1.2,1.4, 1.4,1.4, 1.4,1.2, 1.2,1.2 )));
insert into user_sdo_geom_metadata (table_name, column_name, srid, diminfo)
select sdo_geom.validate_geometry(a.geom,0.005) from test a ;
execute sdo_migrate.to_current(‘TEST’,’GEOM’,10);
select sdo_geom.validate_geometry(a.geom,0.005) from test a ;
delete from user_sdo_geom_metadata where table_name = ‘TEST’ and column_name = ‘GEOM’;
select * from test;
select sdo_geom.sdo_union(a.geom,a.geom,0.005) from test a;
select * from test;
Drop table test;

Yes, to_current fixed the rotation problem, but it did not fix the fact that the two shells of the one polygon were expressed as "external" (ie 1003) yet actually only one is external: the other is its internal "hole" and should have been coded as 2003 and not 1003.

I saw this in the reverse case recently which is why I blogged on it. In the case in hand the outer parts of a multi-part polygon had clockwise rotation and so, when converted, were coded as 2003. Yet, patently, they were outer shells and should have been coded 1003. Only a self-union via sdo_geom.sdo_union can fix this.

If I get time I will show all cases via some diagrams.


Simon · 7 July 2007, 09:23 · #

i want to load the shape file to oralce spatial ,but i donot know how to do and which tool i can use

— xiaochun wu · 28 November 2007, 06:56 · #

Xiaochun wu,

See my comment above in response to a similar question from Anurag.


Simon · 28 November 2007, 07:20 · #

I can successfully load shapefiles into Spatial using both MapBuilder and shp2sdo but I cannot edit the data with any client. For example, I can connect and view the data in uDig but cannot edit. I even tried loading data in MDSYS schema figuring that would have all necessary privileges but that did not work. Any ideas?

— zach · 24 April 2009, 18:26 · #

Helo everybody, I am newbie in oracle spatial. Last day i get copy of maser of Oracle 10g XE. My Question is can Oracle XE save spatial data ?? how to do that and using what kind of tools ?? many thanks

sumarno · 24 March 2010, 09:20 · #