启动监听时发生下面的错误：
[oracle@wt ~]$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 25-DEC-2016 02:35:12
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /u01/11g/product/11.2.0/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /u01/11g/product/11.2.0/network/admin/listener.ora
Log messages written to /u01/11g/diag/tnslsnr/wt/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
TNS-12533: TNS:illegal ADDRESS parameters
TNS-12560: TNS:protocol adapter error
TNS-00503: Illegal ADDRESS parameters
Listener failed to start. See the error message(s) above...
查看是否连接网络，关闭防火墙。
修改：vim /etc/hosts再末尾添加ip地址及用户名，例如10.0.0.1 jz
然后重启网络服务：[root@wt Desktop]# /etc/init.d/network restart
[root@wt Desktop]# ifup eth0
再重新启动监听：[oracle@wt ~]$ lsnrctl start
[oracle@wt ~]$ emctl start dbconsole //启动EM工具时出现如下错误
Environment variable ORACLE_UNQNAME not defined. Please set ORACLE_UNQNAME to database unique name.
则：[oracle@wt ~]$ emca -config dbcontrol db -repos recreate //配置EM工具
Database SID: ora11g //ora11g是SID，可用show parameter instance_name 查询
Listener port number: 1521 //监听端口号
Listener ORACLE_HOME [ /u01/11g/product/11.2.0 ]: //邮箱，可直接enter略过
Password for SYS user: //密码，一般以下三个密码都是同一个
Password for DBSNMP user:
Password for SYSMAN user:
Do you wish to continue? [yes(Y)/no(N)]: y
然后再重新启动：[oracle@wt ~]$ emctl start dbconsole
之后在客户端上访问：https://10.0.0.1:1158/em/console
出现端口后选择:I Understand the risks--add exception--confirm security exception--添用户名和密码
浏览器汉化：edit---preferences---content--languages choose--select a language to add
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