When I create an SDE-file using arcpy I get the following warning:

WARNING 000565: Could not connect to server.

This is the appropriate code

temp = r'C:\Users\admin\AppData\Local\Temp'
host = "myServer"
sdeFileName = "mySdeFile.sde"
service = "sde:oracle11g:myHost/myInstance:" + user
arcpy.CreateArcSDEConnectionFile_management(temp, sdeFileName, myHost, service, username = user, password = password, version = version)

However the file itself was created successfully and I can even put it into ArcCatalogs sde-connections-folder and open it in ArcCatalog. Thus I doubt the error occurs because of any missing privileges.

As this message is quite generic and can be caused by many different problems I don´t want to swallow it.

Has anyone a solution or at least an explanation for this?

I am using ArcGIS 10.2 and Python 2.7 for 32bit.

EDIT: When I use

arcpy.CreateDatabaseConnection_management(temp, sdeFileName, "ORACLE", service, username = user, password = password, version = version)

instead it works without any problems.
However as I also have some customers that still use Application-Server-connections I cannot use this function as there´s no information on the actual host given within the service-paramater as opposed to the DirectConnect-syntax, where the paramater includes both the host and the database-instance.

So what I need is a function that works with all the following inputs:

  1. Application-Server-connection (deprecated)

    host = "myServer"
    service = "5151:mySdeInstance"

  2. Direct-Connect-connection

    service = "sde:oracle11g:tnsName:user"
    where tnsName corresponds the name for that connection within tnsnames.ora.

  3. Easy-Connect-connection

    service = "sde:oracle11g:myServer/user:user"

  • You haven't provided enough information -- all the parameters are hidden in variables.
    – Vince
    Mar 30, 2016 at 14:17
  • @Vince I´m not sure if the information I provided within the update will help any further, but here they are. Mar 30, 2016 at 14:31
  • Are you really using a user-schema geodatabase? (This is not a recommended configuration). Is the "user" variable anything other than "mySchema"? Still unclear: Is the arcpy command running in a 32-bit or 64-bit Python?
    – Vince
    Mar 30, 2016 at 14:49
  • @Vince In our envireonemtn mySchema is identical to the user of the GDB, I´m not sure on the exact term however. Mar 30, 2016 at 14:53
  • If you're not using 10.2.2 with the 23 patches applied, then that's your first task. After that, I'm afraid you'll need to talk with Tech Support.
    – Vince
    Mar 30, 2016 at 15:06

1 Answer 1


Direct connections and 3-tier connections with geoprocessing tools must be created with separate tools. To supply a port or service name, try using the Create ArcSDE Connection File tool.



For a direct connection, use CreateDatabaseConnection_management as suggested above.

  • Have you even read my question? I need an appraoch that not only works for application-server-connections. Furtheremore you do not provide an Sde-filename but only a path-name and your parameters seems quite confusing to me. What is toolbox? If it is the username and password you´re also missing the account_authentication-param. Apr 1, 2016 at 8:40
  • I realized that the method you mention may work for Direct/Eazy Connect also, but was actually designed for Application Server-connections only. Maybe you could add that for all other types we need CreateDatabaseConnection instead into your answer. Apr 4, 2016 at 10:18
  • Gotcha. I could have added this as a reply instead of an answer but I come across this question frequently. We're now 3 versions of ArcGIS since the ArcSDE component has been retired and documentation is getting harder and harder to find.
    – Ken
    Apr 19, 2016 at 19:03

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