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I also found this problem when issuing many queries per minute or when
performing multiple/time demanding distance calculations between
complex (multi)geometries. I use XP pro with R (RPostgreSQL lib) to
connect to PostgreSQL.<br>
<br>
George Vlahakis escreveu:
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<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Myriad Pro","sans-serif"; color: rgb(15, 36, 62);"
lang="EN-US">Ok thanks, I used to use npgsql but for spatial queries
and
binary geometry retrieval I found it the opposite. It has been some
time, but I
will try it.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Myriad Pro","sans-serif"; color: rgb(15, 36, 62);"
lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">From:</span></b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:postgis-users-bounces@postgis.refractions.net">postgis-users-bounces@postgis.refractions.net</a>
[<a class="moz-txt-link-freetext" href="mailto:postgis-users-bounces@postgis.refractions.net">mailto:postgis-users-bounces@postgis.refractions.net</a>] <b>On Behalf Of
</b>Emilie
Laffray<br>
<b>Sent:</b> Friday, December 11, 2009 1:13 PM<br>
<b>To:</b> PostGIS Users Discussion<br>
<b>Subject:</b> Re: [postgis-users] Weird GEOS problem<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom: 12pt;"><o:p> </o:p></p>
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<p class="MsoNormal">2009/12/11 George Vlahakis <<a
moz-do-not-send="true" href="mailto:g.vlahakis@telenavis.com">g.vlahakis@telenavis.com</a>><o:p></o:p></p>
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<p class="MsoNormal" style=""><span style="font-size: 10pt;"
lang="EN-US">Hi all,</span><o:p></o:p></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;"
lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;"
lang="EN-US">Probably nobody has seen this, but on a
particular machine (Win XP) every 2-3 hours or so I am getting the
following
error:</span><o:p></o:p></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;"
lang="EN-US"> </span><o:p></o:p></p>
<p><span lang="EN-US">System.Data.Odbc.OdbcException: ERROR [XX000]
ERROR: Error
creating GEOS Coordinate Sequence; Error while executing the query</span><o:p></o:p></p>
<p class="MsoNormal" style=""><span style="font-size: 10pt;"
lang="EN-US"> </span><o:p></o:p></p>
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<p class="MsoNormal">I might be wrong but you are using .NET? <br>
If it is indeed the case, I would suggest dropping the use of odbc, and
use
npgsql which provides a direct connection to the database. It should
give you
better performance, and maybe extra stability.<br>
<br>
Emilie Laffray<o:p></o:p></p>
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