OpenTunnel Designer Help OpenTunnel Designer Workflows Drawing Workflow Attach TabExternal Database InterfaceConnecting to DatabasesSetting Up the Database InterfaceConnecting to OracleTo Connect to an Oracle Database from the Connect to Database Dialog To Connect to an Oracle Database from the Connect to Database Dialog Open the Connect to Database dialog ( Drawing > Attach > Database > Connect to Database ). Set the Database Server to Oracle. In the Connect String field, key in <user_name>/<password>@<database_alias>. Click OK.