数据库重启后，lsnrctl status提示如下：
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 16-NOV-2017 14:42:49
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /oracle/ora11g/product/network/admin/listener.ora
Listener Log File /oracle/ora11g/diag/tnslsnr/linux-lina/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=linux-lina)(PORT=1521)))
The listener supports no services
The command completed successfully
解决方法：
修改listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /oracle/ora11g/product)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = ora11g)
(ORACLE_HOME = /oracle/ora11g/product)
(SID_NAME = ora11g)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = linux-lina)(PORT = 1521))
)
)
ADR_BASE_LISTENER = /oracle/ora11g
黑色粗体部分为我新增的内容，重启监听后数据库正常。
