今天在配置监听后状态一直显示The listener supports no services，
解决办法：
①登录到数据库，查看数据库service_names
SQL> show parameter service_names
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
service_names string ORA11GR2
②强制注册服务
SQL> alter system register;
System altered.
③再次查看监听状态
[oracle@host05 ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 22-NOV-2016 16:25:51
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=host05)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 22-NOV-2016 16:15:29
Uptime 0 days 0 hr. 10 min. 22 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/host05/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=host05)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Services Summary...
Service "ORA11GR2" has 1 instance(s).
Instance "ORA11GR2", status READY, has 1 handler(s) for this service...
Service "ORA11GR2XDB" has 1 instance(s).
Instance "ORA11GR2", status READY, has 1 handler(s) for this service...
The command completed successfully
