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启动监听程序报错：
说明：在rhel5.8上安装完成oracle11g数据库后，使用netca创建完监听，启动监听时报错。还未使用dbca创建实例。
[oracle@rusky-oracle11g ~]$ lsnrctl start LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-APR-2015 08:33:53 Copyright (c) 1991, 2009, Oracle. All rights reserved. Starting /u01/app/oracle/product/11.2.0.1/db_1/bin/tnslsnr: please wait... TNS-12537: TNS:connection closed TNS-12560: TNS:protocol adapter error TNS-00507: Connection closed Linux Error: 29: Illegal seek
处理方法：修改/etc/hosts文件如下
[root@rusky-oracle11g ~]# cat /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. #127.0.0.1 rusky-oracle11g.com rusky-oracle11g 把此行注释，添加第二行如下，否则启动监听程序时报错。 127.0.0.1 localhost.domain localhost 192.168.1.203 rusky-oracle11g.com rusky-oracle11g
/etc/resolve.con文件默认如下，未做修改：
[oracle@rusky-oracle11g ~]$ cat /etc/resolv.conf search com
再次启动监听正常：
[oracle@rusky-oracle11g ~]$ lsnrctl start LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-APR-2015 08:37:38 Copyright (c) 1991, 2009, Oracle. All rights reserved. Starting /u01/app/oracle/product/11.2.0.1/db_1/bin/tnslsnr: please wait... TNSLSNR for Linux: Version 11.2.0.1.0 - Production System parameter file is /u01/app/oracle/product/11.2.0.1/db_1/network/admin/listener.ora Log messages written to /u01/app/oracle/diag/tnslsnr/rusky-oracle11g/listener/alert/log.xml Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rusky-oracle11g.com)(PORT=1521))) Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rusky-oracle11g.com)(PORT=1521))) STATUS of the LISTENER ------------------------ Alias LISTENER Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production Start Date 02-APR-2015 08:37:38 Uptime 0 days 0 hr. 0 min. 0 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /u01/app/oracle/product/11.2.0.1/db_1/network/admin/listener.ora Listener Log File /u01/app/oracle/diag/tnslsnr/rusky-oracle11g/listener/alert/log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rusky-oracle11g.com)(PORT=1521))) The listener supports no services The command completed successfully
参考资料：
http://blog.csdn.net/zengmuansha/article/details/22686231
http://blog.chinaunix.net/uid-24612962-id-3194611.html
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原文地址：http://www.cnblogs.com/rusking/p/4388874.html
