fdo problem oracle help

[carpetascatastro at laplata.gov.ar]

hi, sorry for my english, i cant conect to oracle via obdc
i have this error

System.Net.WebException: The remote server returned an error: (559)
MgFdoException.
   at
Autodesk.MapGuide.Studio.Site.Comm.RequestManager.ExecutePendingGetRequestTo
String(Operation operation)
   at
Autodesk.MapGuide.Studio.Site.Comm.RequestManager.TestConnection(String
resourceId, String provider, String connectionString)
   at Autodesk.MapGuide.Studio.Site.FeatureSourceInfo.TestConnection()
   at
Autodesk.MapGuide.Studio.UI.FeatureSourceEditors.TestConnectionControl.butto
nTestConnection_Click(Object sender, EventArgs e)
 
somebody help me

thanks oscar

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