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#刚开始直接root用户登录,在etc目录,切换到oracle,输入lsnrctl start启动oracle时提示"lsnrctl: command not found" [root@loveyao_test etc]# su oracle [oracle@loveyao_test etc]$ lsnrctl start bash: lsnrctl: command not found
#切换回root用户,cd /根目录, 再次su - oracle ,输入lsnrctl start启动oracle,这次正常啦. [oracle@loveyao_test ~]$ cd / [oracle@loveyao_test /]$ su -root su: invalid option -- 'r' Try `su --help' for more information. [oracle@loveyao_test /]$ su - root Password: [root@loveyao_test ~]# su - oracle [oracle@loveyao_test ~]$ [oracle@loveyao_test ~]$ lsnrctl start LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-JUL-2016 22:06:57 Copyright (c) 1991, 2011, Oracle. All rights reserved. Starting /u01/app/oracle/product/11.2.0/db_1/bin/tnslsnr: please wait... TNSLSNR for Linux: Version 11.2.0.3.0 - Production Log messages written to /u01/app/oracle/diag/tnslsnr/loveyao_test/listener/alert/log.xml Error listening on: (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)) TNS-12545: Connect failed because target host or object does not exist TNS-12560: TNS:protocol adapter error TNS-00515: Connect failed because target host or object does not exist Linux Error: 25: Inappropriate ioctl for device Listener failed to start. See the error message(s) above... [oracle@loveyao_test ~]$ #如上所示: oracle启动失败,提示"Error listening on: (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)) TNS-12545: Connect failed because target host or object does not exist" #hosts文件导致,切换root修改hosts文件,重新启动oracle可以正常启动. 具体操作如下: [oracle@loveyao_test alert]$ su - root Password: [root@loveyao_test ~]# [root@loveyao_test ~]# [root@loveyao_test ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 ~ #将hosts文件localhost 修改成主机名hostname的名字, 注意: vi /etc/sysconfig/network 文件可以修改hostname的名字(这里修改后需要重启系统). [root@loveyao_test ~]# vi /etc/hosts 127.0.0.1 loveyao_test localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 ~ [root@loveyao_test ~]# su - oracle [oracle@loveyao_test ~]$ lsnrctl start LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-JUL-2016 22:23:22 Copyright (c) 1991, 2011, Oracle. All rights reserved. Starting /u01/app/oracle/product/11.2.0/db_1/bin/tnslsnr: please wait... TNSLSNR for Linux: Version 11.2.0.3.0 - Production Log messages written to /u01/app/oracle/diag/tnslsnr/loveyao_test/listener/alert/log.xml Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=loveyao_test)(PORT=1521))) Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521)) STATUS of the LISTENER ------------------------ Alias LISTENER Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production Start Date 04-JUL-2016 22:23:22 Uptime 0 days 0 hr. 0 min. 0 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Log File /u01/app/oracle/diag/tnslsnr/loveyao_test/listener/alert/log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=loveyao_test)(PORT=1521))) The listener supports no services The command completed successfully [oracle@loveyao_test ~]$ #查看oracle监听端口1521 [oracle@loveyao_test ~]$ ss -tanl Recv-Q Send-Q Local Address:Port Peer Address:Port 0 128 :::111 :::* 0 128 *:111 *:* 0 128 :::1521 :::* 0 128 :::25493 :::* 0 128 :::22 :::* 0 128 *:22 *:* 0 128 127.0.0.1:631 *:* 0 128 ::1:631 :::* 0 100 ::1:25 :::* 0 100 127.0.0.1:25 *:* 0 128 *:39108 *:* [oracle@loveyao_test ~]$