[mapguide-users] MgConnectionFailedException Error when creating a Postgis Layer

tmerz trishmerz at gmail.com
Fri Feb 13 12:51:50 EST 2009

I have established a new PostGIS conneciton, and tested the connection with
no errors.  

When creating a new layer and connecting it to my PostGIS DB, the following
error message occurs: 

Failed to read schema from data source.
The operation gave the error message:  The remote server returned an error: 
(599)     MgConnectionFailedException.:
Connot establish connection.
Exception occured in method MgServerDescribeSchema::ExecuteDescribeSchema()
at line 173 in file

The purpose of my MGOS application is to map data housed in PostGIS.  If I
can't access my data through a live connection will have to abandon the

Any feedback would be greatly appreciated!


Hi there,

I've found many of the posting regarding connecting PostGIS and MGOS
extremely useful.  I have managed to create a datasource, point it to the
PostGIS database, and no errors are reported when testing the connection.

However...  Now, I am trying to create a map that will allow me to display
my postGIS data.  I have created a new layer in MGOS Web Studio and pointed
the layer to my postGIS datasource (as suggested in step 5-6).

At this point, "Step 7 Select the table to use", I am not able to select any
tables.  I am attempting to select a feature source from the drop down list,
but it is empty.  Should my PostGIS tables show up at this point?

Any feedback regarding displaying PostGIS data after establishing a
connection would be greatly appreciated!


Intengu Technologies wrote:
>> 1. Create a datasource
> How does one create a datasource using WebStudio or can some please post a
> working example of a datasource.
> On 13/09/2007, Kenneth, GEOGRAF A/S <ks at geograf.dk> wrote:
>>  If you are able to connect to the datasource, there should be no problem
>> displaying it.
>> These are the steps to follow:
>> 1. Create a datasource
>> 2. Point it to the PostGIS database
>> 3. Click "Test connection"
>> 4. When it works, save the datasource.
>> 5. Create a new layer
>> 6. Point the layer to the datasource.
>> 7. Select the table to use.
>> 8. Style the point, line and area to your pleasing.
>> 9. Save the layer.
>> 10. Create a mapdefinition.
>> 11. Select the correct projection for the data.
>> 12. Add the layer to the map, make sure you have "Layer is initially
>> visble in the map" checked.
>> 13. Save the map.
>> 14. Create a new WebLayout.
>> 15. Select the map.
>> 16. Save the WebLayout.
>> After item 7, you should be able to preview your data, using the
>> "Preview"
>> feature.
>> Item 8 is where you could set up filters and the like.
>> You can repeat item 12, if you have many layers.
>> If the above does not help, try to explain where it goes wrong.
>> Regards, Kenneth, GEOGRAF A/S

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