When you uninstall IBM Tivoli Monitoring, the ODBC data source created for the Warehouse Proxy Agent is not removed automatically, which can cause problems when you reinstall IBM Tivoli Monitoring. To prevent these problems, manually remove the ODBC data source after you uninstall IBM Tivoli Monitoring.
DB2 UNCATALOG SYSTEM ODBC DATA SOURCE datasource_name
If you are using a Microsoft SQL database or an Oracle database, use the Windows ODBC Data Source Administrator utility to remove the ODBC data source.