How to create oracle spatial index?

@wilmer.lemke 

To create an Oracle Spatial index, you can use the following steps:

1. Connect to your Oracle database using a tool like SQL*Plus or SQL Developer.
2. Create a table with a spatial column (such as a geometry or geography column) if you haven't already done so. For example:

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CREATE TABLE spatial_table (
  id NUMBER,
  geometry SDO_GEOMETRY
);

1. Create a spatial index on the spatial column using the CREATE INDEX statement. Here is an example of creating a spatial index on the geometry column of the spatial_table:

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CREATE INDEX spatial_index
ON spatial_table(geometry)
INDEXTYPE IS MDSYS.SPATIAL_INDEX;

1. You can also specify additional parameters when creating the spatial index, such as specifying the spatial index type (e.g. R-tree or quadtree) or the parameters for the index. Here is an example of creating a quadtree spatial index with a leaf size of 16:

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CREATE INDEX spatial_index
ON spatial_table(geometry)
INDEXTYPE IS MDSYS.SPATIAL_INDEX
PARAMETERS('tablespace=index_ts', 'rtreeindex=quadtree', 'queries=(leaf size=16)');

1. After creating the spatial index, make sure to analyze the table and index to update statistics:

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ANALYZE TABLE spatial_table COMPUTE STATISTICS;
ANALYZE INDEX spatial_index COMPUTE STATISTICS;

1. Your spatial index is now created and ready to be used for spatial queries in your Oracle database.