RAC hosts没有配置导致TNS-12541: TNS:no listener

TNS-12541: TNS:no listener
这次错误我总结一下有三种情况
1. 本地监听程序没有开起来
2. 服务器网络到客户端网络不通
3. Hosts里面配置问题[Oracle@his1 admin]$ tnsping crds3db2 客户端tnsping提示程序无监听TNS Ping Utility for Linux: Version 11.2.0.2.0 - Production on 28-MAY-2014 11:11:57

Copyright （c） 1997, 2010, Oracle. All rights reserved.Used parameter files:Used TNSNAMES adapter to resolve the alias
Attempting to contact （DESCRIPTION = （ADDRESS = （PROTOCOL = TCP）（HOST = 192.168.20.8）（PORT = 1521））（CONNECT_DATA = （SERVER = DEDICATED）（SERVICE_NAME = crds3db）））
TNS-12541: TNS:no listener
到oracle用户查看监听状态为正常，但是有一个节点1ip没有注册到节点2监听上面
[oracle@his1 ~]$ lsnrctl statusLSNRCTL for Linux: Version 11.2.0.2.0 - Production on 28-MAY-2014 10:56:09Copyright （c） 1991, 2010, Oracle. All rights reserved.Connecting to （ADDRESS=（PROTOCOL=tcp）（HOST=）（PORT=1521））
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 28-MAY-2014 10:09:10
Uptime 0 days 0 hr. 46 min. 59 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /app/grid/product/11.2.0/grid/network/admin/listener.ora
Listener Log File /app/grid/grid_base/diag/tnslsnr/his1/listener/alert/log.xml
Listening Endpoints Summary...
（DESCRIPTION=（ADDRESS=（PROTOCOL=ipc）（KEY=LISTENER）））
（DESCRIPTION=（ADDRESS=（PROTOCOL=tcp）（HOST=127.0.0.1）（PORT=1521）））
（DESCRIPTION=（ADDRESS=（PROTOCOL=tcp）（HOST=192.168.20.6）（PORT=1521）））
Services Summary...
Service "+ASM" has 1 instance（s）.
Instance "+ASM1", status READY, has 1 handler（s） for this service...
Service "crds3db" has 1 instance（s）.
Instance "crds3db1", status READY, has 1 handler（s） for this service...
The command completed successfully

[root@his1 admin]# vi /etc/hosts
把里面删除his1 因为两个计算名冲突导致监听只注册到127.0.0.1
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 his1 localhost.localdomain localhost
#::1 localhost6.localdomain6 localhost6
192.168.20.1 his1
192.168.20.2 his2
192.168.20.5 his-scan
192.168.20.6 his1-vip
192.168.20.7 his2-vip
192.168.20.15 hisdg
10.0.0.1 his1-priv
10.0.0.2 his2-priv
[grid@his2 ~]$ lsnrctl statusLSNRCTL for Linux: Version 11.2.0.2.0 - Production on 28-MAY-2014 11:18:14Copyright （c） 1991, 2010, Oracle. All rights reserved.Connecting to （DESCRIPTION=（ADDRESS=（PROTOCOL=IPC）（KEY=LISTENER）））
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 28-MAY-2014 11:06:52
Uptime 0 days 0 hr. 11 min. 22 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /app/grid/product/11.2.0/grid/network/admin/listener.ora
Listener Log File /app/grid/grid_base/diag/tnslsnr/his2/listener/alert/log.xml
Listening Endpoints Summary...
（DESCRIPTION=（ADDRESS=（PROTOCOL=ipc）（KEY=LISTENER）））
（DESCRIPTION=（ADDRESS=（PROTOCOL=tcp）（HOST=192.168.20.2）（PORT=1521）））
（DESCRIPTION=（ADDRESS=（PROTOCOL=tcp）（HOST=192.168.20.7）（PORT=1521）））
Services Summary...
Service "+ASM" has 1 instance（s）.
Instance "+ASM2", status READY, has 1 handler（s） for this service...
Service "crds3db" has 1 instance（s）.
Instance "crds3db2", status READY, has 1 handler（s） for this service...
The command completed successfully
C:Usersoracle>tnsping crds3dbTNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 28-5月 -
2014 11:32:16Copyright （c） 1997, 2010, Oracle. All rights reserved.已使用的参数文件:
D:appmxqproduct11.2.0dbhome_1 etworkadminsqlnet.ora
已使用 TNSNAMES 适配器来解析别名
尝试连接（DESCRIPTION = （ADDRESS_LIST = （ADDRESS = （PROTOCOL = TCP）（HOST = 192.1
68.20.1）（PORT = 1521）））（CONNECT_DATA = （SERVICE_NAME = crds3db）））
OK （10 毫秒）
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