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<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Book Antiqua","serif";
color:#1F497D'>Same here. Thanks for replying however.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Book Antiqua","serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
postgis-users-bounces@postgis.refractions.net
[mailto:postgis-users-bounces@postgis.refractions.net] <b>On Behalf Of </b>Joao
Goncalves<br>
<b>Sent:</b> Tuesday, December 15, 2009 10:17 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>Yes, the connection resource object goes invalid and I need
to create a new one. I've also experienced server shut downs caused by this
problem. Funny, I added eactly the same solution drop and reconnect within a
tryCatch block. I'm guessing this is a server side/GEOS issue because it tends
to happen in very specific conditions, in my case when geoproccessing is very
intensive. Nevertheless, I have no real knowledge on GEOS internals to figure
this out. <br>
<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Myriad Pro";
color:#0F243E'>Did you also see that the connection is no longer valid from
that point on and you need to re-connect? I mean, even if you wait and try
again, it won’t work. I have to resort in restarting the app but not I added code
to try to drop and re-connect. Haven’t hit the prob yet to confirm this solves
it.</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Myriad Pro";
color:#0F243E'> </span><o:p></o:p></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> <a
href="mailto:postgis-users-bounces@postgis.refractions.net">postgis-users-bounces@postgis.refractions.net</a>
[<a href="mailto:postgis-users-bounces@postgis.refractions.net">mailto:postgis-users-bounces@postgis.refractions.net</a>]
<b>On Behalf Of </b>"Joao G."<br>
<b>Sent:</b> Sunday, December 13, 2009 11:18 PM<br>
<b>To:</b> PostGIS Users Discussion<br>
<b>Subject:</b> [postgis-users] Weird GEOS problem</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>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: <o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Myriad Pro";
color:#0F243E'>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.</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Myriad Pro";
color:#0F243E'> </span><o:p></o:p></p>
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border-color:-moz-use-text-color'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> <a
href="mailto:postgis-users-bounces@postgis.refractions.net">postgis-users-bounces@postgis.refractions.net</a>
[<a 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</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'> <o:p></o:p></p>
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<p class=MsoNormal>2009/12/11 George Vlahakis <<a
href="mailto:g.vlahakis@telenavis.com">g.vlahakis@telenavis.com</a>><o:p></o:p></p>
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<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt'>Hi all,</span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt'>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><span lang=EN-US style='font-size:10.0pt'> </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><span lang=EN-US style='font-size:10.0pt'> </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>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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