[postgis-users] PostGIS and Oracle Comparison

Paul Ramsey pramsey at refractions.net
Wed Apr 20 14:24:07 PDT 2005

Not at the moment, and the most interesting stuff can never really be 
public (performance comparisons). The other danger I have found w/ 
comparisons is that Oracle relases "checkbox" features quite regularly 
that are either very poorly tested and supported or are simply stubs. 
For example, the Oracle "topology support" remains, at this date (over a 
year since "release") little more than a data model and some very 
trivial functions against that model.

Most of the interesting differences require testing to confirm. I have 
long had a sneaking suspicion that PostGIS has vastly better query 
optimization for complex spatial/attribute queries, but I have never had 
the time to verify this. And even if I did, that might constitute a 
"benchmark" and not be publishable. :(

The original study the paper you have was based on was a funded study 
that took about a month of effort. It also included some private 
performance numbers for the clients eyes only. Good comparisons really 
do take time and care.


Godwin, Elizabeth wrote:

> Hi all,
> At last year's OpenSourceGIS Conference, I obtained a document, "PostGIS 
> Introduction and Evaluation", from a workshop.  In it was a table 
> comparing Oracle 9i vs PostGIS.  Is there an updated comparison of 
> PostGIS 1.0.0 to Oracle Spatial 10g??
> Thanks!
> Liz Godwin
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