Manage connections to a geodatabase in SAP HANA

Available with Standard or Advanced license.

As the geodatabase administrator, you occasionally need to see who is connected to the geodatabase and which connections are locking resources. You may even need to remove certain connections if people are not present to log out themselves. For example, an editor may have left an edit session open, locking the data in the edit session and preventing other editors from accessing it. If there are a limited number of connections that can be made to a geodatabase, you might need to disconnect someone who failed to log out to free up a connection. Or you may want to have everyone log out so you can apply a patch to the database, restore the database, or compress the geodatabase.

You can connect to the geodatabase as the sde user from ArcGIS Pro to view and, if necessary, remove connections. Alternatively, you can use ArcPy functions to complete the same workflow.

Caution:

Use caution when disconnecting users. Esri recommends that you avoid disconnecting active sessions, especially if the connected user is in the process of editing. You should only disconnect sessions that were left open but are not being used (for example, if someone left the session open over the weekend), orphaned sessions that are locking an object, or sessions involved in a deadlock situation.

To disconnect users from a geodatabase in SAP HANA, the sde user must have SESSION ADMIN permission in the database.

First, determine who is connected to the geodatabase. If necessary, you can then remove connections.

Identify and remove connections from ArcGIS Pro

You can connect to the geodatabase as sde in ArcGIS Pro to view connections from within the Geodatabase Administration dialog box.

1. Start ArcGIS Pro.
2. Connect to the geodatabase as the sde user.
3. Right-click the database connection and click Administration > Connections.

   A list is displayed showing all sessions that are currently connected to the geodatabase. Your session is displayed in italic text.

4. Contact individuals and ask them to close their sessions. If you are unable to contact them and still need to disconnect them from the geodatabase, proceed with the next step.
5. Right-click the specific session you want to remove from the geodatabase and click Disconnect.

   The session is immediately dropped from the geodatabase.

6. Close the Geodatabase Administration dialog box.

Identify and remove connections using Python

You can run Python functions to create a geodatabase connection file for the geodatabase administrator, use that connection file to connect to the geodatabase and get a list of all current geodatabase connections, and remove a connection from the geodatabase if necessary.

1. Create a database connection file by running the CreateDatabaseConnection_management function in a Python window. Save the user name and password with the file.

   In this example, a connection file (saphana.sde) is created in the user's dbconnections directory. The connection file creates a connection to a database named spsap, logged in as the sde user.

   import arcpy
   arcpy.CreateDatabaseConnection_management ("/usr/dbconnections", "saphana.sde", "SAPHANA", "spsap", "DATABASE_AUTH", "sde", "thesdepwd", "SAVE_USERNAME")

2. Run the ListUsers function to get a list of all current connections to the spsap geodatabase.

   Provide the connection file you created in the previous step.

   ##No need to import arcpy if you are running functions in the same Python window.
   import arcpy
   
   arcpy.ListUsers("/usr/dbconnections/saphana.sde")

   A list of user connections is returned.

   [user(ClientName=u'PC4', ConnectionTime=datetime.datetime(2018, 10, 18, 8, 30, 19),
    ID=18, IsDirecConnection=True, Name=u'PUBLISHER1')]
   [user(ClientName=u'PC25', ConnectionTime=datetime.datetime(2018, 10, 21, 14, 10, 43),
    ID=33, IsDirecConnection=True, Name=u'EDITOR2')]
   [user(ClientName=u'PC11', ConnectionTime=datetime.datetime(2018, 10, 22, 9, 18, 26),
    ID=39, IsDirecConnection=True, Name=u'READER5')]
   [user(ClientName=u'PCA2', ConnectionTime=datetime.datetime(2018, 10, 22, 11, 21, 2),
    ID=41, IsDirecConnection=True, Name=u'SDE')]

3. Contact individuals and ask them to close their sessions. If you are unable to contact them and still need to disconnect them from the geodatabase, proceed with the next step.
4. Use the information obtained from the ListUsers function to identify the connection to remove using the DisconnectUser function.

   Specify the ID of the connection to remove. Here, the connection with ID 33 is removed:

   ##No need to import arcpy if you are running functions in the same Python window.
   import arcpy
   
   arcpy.DisconnectUser("/usr/dbconnections/saphana.sde",33)

   The session is immediately dropped from the geodatabase.