主要命令：
tcp.validnode_checking = YES
tcp.excluded_nodes = (list of IP addresses) #注意此处ip第一个数字不能为0，如192.168.0.03数据库不会认为是192.168.0.3
tcp.invited_nodes = (list of IP addresses) #注意括号内的一定不能有跳行
重启listener生效(或者lsnrctl reload)
tcp.excluded_nodes = (list of IP addresses) #注意此处ip第一个数字不能为0，如192.168.0.03数据库不会认为是192.168.0.3
tcp.invited_nodes = (list of IP addresses) #注意括号内的一定不能有跳行
重启listener生效(或者lsnrctl reload)
参数tcp.validnode_checking=yes 的作用是为了check sqlnet.ora 中参数 TCP.INVITED_NODES 中的IP address 合法性的。
如果由一个IP Address 或 Hostname 不能正常访问，就会导致Listener 不能正常启动。
经常会有一些Client 的用户由于机器改变，或关机。这样的情况下数据库的Listener 就不能正常打开，虽然Oracle 数据库的Lisenter 不是经常的打开关闭但我认为这个参数设置比较尴尬，在Oracle 9i 大到 11.1.0.6都有这种情况。（经测试11g2中不会产生该情况）
当ip错误的情况下，会导致一下情况发生
localhost-> lsnrctl start
LSNRCTL for Linux: Version 10.1.0.5.0 - Production on 06-MAY-2009 16:25:37
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.1.0.5.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost.domain)(PORT=1524)))
TNS-12533: TNS:illegal ADDRESS parameters
TNS-12560: TNS:protocol adapter error
TNS-00503: Illegal ADDRESS parameters
当tcp.excluded_nodes或者tcp.invited_nodes没有设置的情况下
启动监听报错TNS-12560
[grid@localhost admin]$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 19-FEB-2014 11:30:20
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Starting /u01/app/grid/asm/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.2.0 - Production
System parameter file is /u01/app/grid/asm/network/admin/listener.ora
Log messages written to /u01/app/grid/diag/tnslsnr/localhost/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost.localdomain)(PORT=1521)))
TNS-12560: TNS:protocol adapter error
TNS-00584: Valid node checking configuration error
Listener failed to start. See the error message(s) above...
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 19-FEB-2014 11:30:20
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Starting /u01/app/grid/asm/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.2.0 - Production
System parameter file is /u01/app/grid/asm/network/admin/listener.ora
Log messages written to /u01/app/grid/diag/tnslsnr/localhost/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost.localdomain)(PORT=1521)))
TNS-12560: TNS:protocol adapter error
TNS-00584: Valid node checking configuration error
Listener failed to start. See the error message(s) above...
