Oracle 11g RAC 数据库监听默认都是grid用户通过集群工具来进行管理的，但是有些时候我们会发现数据库监听程序有oracle用户启动的，这里就存在一些问题。比如，出现的多余的监听进程我们可以kill掉
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$ps -ef|grep tns
root 10 2 0 08:11 ? 00:00:00 [netns]
grid 4880 1 0 08:24 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER_SCAN1 -inherit
oracle 11067 1 0 09:09 ? 00:00:00 /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr LISTENER -inherit
grid 11745 1 0 09:13 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER -inherit
grid 11977 11140 0 09:14 pts/0 00:00:00 grep tns
$kill -9 11067
-bash: kill: (11067) - Operation not permitted
$exit
logout
[root@roidb2 ~]# kill -9 11067
[root@roidb2 ~]# ps -ef|grep tns
root 10 2 0 08:11 ? 00:00:00 [netns]
grid 4880 1 0 08:24 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER_SCAN1 -inherit
grid 11745 1 0 09:13 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER -inherit
root 12046 2589 0 09:15 pts/0 00:00:00 grep tns
[root@roidb2 ~]#
[root@roidb2 ~]#
Oracle 用户启动监听，这种肯定是错误的操作。
$lsnrctl status
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 09-JUL-2018 09:18:55
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
$lsnrctl start
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 09-JUL-2018 09:18:58
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Starting /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Log messages written to /u01/app/oracle/diag/tnslsnr/roidb2/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=roidb2)(PORT=1521)))
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 09-JUL-2018 09:18:58
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/roidb2/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=roidb2)(PORT=1521)))
The listener supports no services
The command completed successfully
$ps -ef|grep tns
root 10 2 0 08:11 ? 00:00:00 [netns]
grid 4880 1 0 08:24 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER_SCAN1 -inherit
grid 11745 1 0 09:13 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER -inherit
oracle 12598 1 0 09:18 ? 00:00:00 /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr LISTENER -inherit
oracle 12605 12521 0 09:19 pts/0 00:00:00 grep tns
$
$exit
logout
[root@roidb2 ~]# kill -9 12598
[root@roidb2 ~]# ps -ef|grep tns
root 10 2 0 08:11 ? 00:00:00 [netns]
grid 4880 1 0 08:24 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER_SCAN1 -inherit
grid 11745 1 0 09:13 ? 00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER -inherit
root 12695 2589 0 09:19 pts/0 00:00:00 grep tns
[root@roidb2 ~]#
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