[gdal-dev] ArcSDE: connection times too long
Hi listers. I'm seing a very long delay while connecting to ArcSDE. Even if I just do ogrinfo on a single layer I still have to wait a few minutes before I get anything back. Any parameter I can use? Thanks, Duarte ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] ArcSDE: connection times too long
On 11-04-12 10:33 AM, Duarte Carreira wrote: Hi listers. I’m seing a very long delay while connecting to ArcSDE. Even if I just do ogrinfo on a single layer I still have to wait a few minutes before I get anything back. Any parameter I can use? Duarte, The SDE driver docs at http://www.gdal.org/ogr/drv_sde.html says: If the layer parameter is specified then the SDE driver is able to skip reading the summary metadata for each layer; skipping this step can be a significant time savings. So try listing the layer of interest in the connection string. SDE:server,instance,database,username,password,layer Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
RE: [gdal-dev] ArcSDE: connection times too long
Hi Frank. I do that already: ogrinfo -so -ro SDE:server,5151,,user,pdw user.featureclass Notice that I separate the layer name with a blank space. Using a comma does not work for me (wonder if the docs are right on that??). I still wait quite a bit. This is a mid-sized db, with some 1200 feature classes... Duarte -Mensagem original- De: Frank Warmerdam [mailto:warmer...@pobox.com] Enviada: terça-feira, 12 de Abril de 2011 15:47 Para: gdal-dev@lists.osgeo.org Assunto: Re: [gdal-dev] ArcSDE: connection times too long On 11-04-12 10:33 AM, Duarte Carreira wrote: Hi listers. I'm seing a very long delay while connecting to ArcSDE. Even if I just do ogrinfo on a single layer I still have to wait a few minutes before I get anything back. Any parameter I can use? Duarte, The SDE driver docs at http://www.gdal.org/ogr/drv_sde.html says: If the layer parameter is specified then the SDE driver is able to skip reading the summary metadata for each layer; skipping this step can be a significant time savings. So try listing the layer of interest in the connection string. SDE:server,instance,database,username,password,layer Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] ArcSDE: connection times too long
On 11-04-12 12:12 PM, Duarte Carreira wrote: Hi Frank. I do that already: ogrinfo -so -ro SDE:server,5151,,user,pdw user.featureclass Notice that I separate the layer name with a blank space. Using a comma does not work for me (wonder if the docs are right on that??). I still wait quite a bit. This is a mid-sized db, with some 1200 feature classes... Duarte, In your case you are passing user.featureclass as the layer name to ogrinfo telling it that you only want to report on that layer. But to avoid opening all layers, you should also include it in the connection string. eg. ogrinfo -so -ro SDE:server,5151,,user,pdw,user.featureclass user.featureclass Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
RE: [gdal-dev] ArcSDE: connection times too long
That never occurred to me! Ok, so I measured 48secs sharp to get ogrinfo results, by including the featureclass name in the connection and after that too (like you pointed out). Then got 45secs with just the name in the connection, and got all layers listed. Don't know what to make of this... Duarte -Mensagem original- De: Frank Warmerdam [mailto:warmer...@pobox.com] Enviada: terça-feira, 12 de Abril de 2011 17:32 Para: Duarte Carreira Cc: gdal-dev@lists.osgeo.org Assunto: Re: [gdal-dev] ArcSDE: connection times too long On 11-04-12 12:12 PM, Duarte Carreira wrote: Hi Frank. I do that already: ogrinfo -so -ro SDE:server,5151,,user,pdw user.featureclass Notice that I separate the layer name with a blank space. Using a comma does not work for me (wonder if the docs are right on that??). I still wait quite a bit. This is a mid-sized db, with some 1200 feature classes... Duarte, In your case you are passing user.featureclass as the layer name to ogrinfo telling it that you only want to report on that layer. But to avoid opening all layers, you should also include it in the connection string. eg. ogrinfo -so -ro SDE:server,5151,,user,pdw,user.featureclass user.featureclass Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
