For more information about server enablement, see the topic Enabling the Domino server to communicate with the DB2 server
1. From the Domino Administrator, click the Configuration tab and then expand the Server section.
2. Select the Server document to be edited, and then click Edit Server.
3. Click the DB2 tab.
4. Remove all entries from the fields on the DB2 tab of the Server document.
5. When all of the fields are blank, click Save and Close.
6. Exit from the Domino Administrator client.
7. Shut down and then restart the Domino server. The Domino server is no longer enabled for communication with a DB2 server.