LINUX登录oracle用户，通过lsnrctl start命令启动数据库时，报错如下：
“ [[email protected] ~]$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 29-APR-2015
07:38:11
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /home/oracle/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr:
please wait…
TNS-12537: TNS:connection closed
TNS-12560: TNS:protocol adapter error
Linux Error: 29: Illegal seek
“`
原因：
/etc/hosts内有两个localhost的主机名，监听冲突。
解决方法:
1、修改其中一个主机名，比如oracle，执行以下命令。
hostname oracle
2、在/etc/hosts内修改一个主机名为oracle。
[[email protected] etc]# cat /etc/hosts
127.0.0.1 localhost
::1 oracle
3、在/etc/sysconfig/network修改主机名为oracle。
[[email protected] etc]# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=oracle
4、重新启动，在oracle用户下执行lsnrctl start。
[[email protected] ~]$ lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 29-APR-2015 07:46:27
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /home/oracle/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /home/oracle/app/diag/tnslsnr/oracle/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 29-APR-2015 07:46:29
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /home/oracle/app/diag/tnslsnr/oracle/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
The listener supports no services
The command completed successfully
时间： 2024-10-25 00:00:09