安装Oracle11g Grid后再安装Oracle11g DB +ASM实例提示TNS: 协议适配器错误

C:\Documents and Settings\Administrator>set ORACLE_SID=+ASM

C:\Documents and Settings\Administrator>sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on 星期四 2月 16 11:41:25 2012

Copyright (c) 1982, 2010, Oracle. All rights reserved.

SQL> conn / as sysasm
ERROR:

ORA-12560: TNS: 协议适配器错误

需要netmgr里配置LISTENER