监听不能通过lsnrctl status查看

服务器有有多个实例，但一个新建的实例却不能通过lsnrctl status查看监听状态。

进入sqlplus

>sqlplus "/as sysdba"

SQL*Plus: Release 10.2.0.1.0 - Production on Mon May 5 08:50:22 2008

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> show parameter listener;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
local_listener                       string      LISTENER????
remote_listener                      string

SQL>  ALTER SYSTEM SET LOCAL_LISTENER='' SCOPE=BOTH;