两个节点host,ipvip ,scan的信息
#eth0-Public IP
162.12.0.1 cqltjcpt1
162.12.0.3 cqltjcpt2
#eth2 PRIVATE IP
192.12.0.1 cqltjcpt1-prvi
192.12.0.3 cqltjcpt2-prvi
#VIP
162.12.0.5 cqltjcpt1-vip
162.12.0.7 cqltjcpt2-vip
#SCAN
162.12.0.9 cqltjcptscan
11G rac中，监听文件默认配置在grid用户下
[root@cqltjcpt2 ~]# su - grid
[grid@cqltjcpt2 ~]$ cd $ORACLE_HOME
[grid@cqltjcpt2 grid]$ cd network/admin/
[grid@cqltjcpt2 admin]$ ll
-rw-r--r-- 1 grid oinstall 189 Jan 7 21:21 endpoints_listener.ora
-rw-r--r-- 1 grid oinstall 350 Jan 7 21:21 listener.ora
drwxr-xr-x 2 grid oinstall 4096 Jan 7 21:04 samples
-rw-r--r-- 1 grid oinstall 205 May 11 2011 shrept.lst
-rw-r--r-- 1 grid oinstall 227 Jan 7 21:21 sqlnet.ora
Oracle 11.2版本后，有一个新的监听文件endpoints_listener.ora被引进，里面的内容是节点的IP和VIP信息
Endpoints_listener.ora 文件的作用是向后兼容11.2版本以前的数据库，DBCA建库时，需要通过获取endpoints的位置信息来配置数据库参数和tnsnames
[grid@cqltjcpt2 admin]$ more endpoints_listener.ora
LISTENER_CQLTJCPT2=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)
(HOST=cqltjcpt2-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=162.12.0.3)(PORT=1521)(IP=FIRST))))
由于用hosts解析配置本例中没有配置DNS，只有一个scan listener 此时scan监听只运行在Node1上
[grid@cqltjcpt2 admin]$ ps -ef | grep tnslsnr
grid 9840 1 0 Jan07 ? 00:00:22 /u01/oracle/grid/bin/tnslsnr LISTENER -inherit
grid 22674 21922 0 11:08 pts/1 00:00:00 grep tnslsnr
[grid@cqltjcpt2 ~]$ ssh cqltjcpt1
[grid@cqltjcpt1 ~]$ ps -ef | grep tnslsnr
grid 8211 1 0 Jan07 ? 00:00:44 /u01/oracle/grid/bin/tnslsnr LISTENER -inherit
grid 8380 1 0 Jan07 ? 00:00:02 /u01/oracle/grid/bin/tnslsnr LISTENER_SCAN1 -inherit
grid 22060 22021 0 11:08 pts/1 00:00:00 grep tnslsnr
从ps -ef输出可以看到，无论是scan监听，还是本地监听都是运行在grid用户的oracle_home下
NODE2本地监听指向的是vip地址162.12.0.7 ，因为rac是通过vip对外提供服务
[oracle@cqltjcpt2 ~]$ sqlplus / as sysdba
SQL> show parameter local_listener
NAME TYPE VALUE
--------------- ---------- --------------------------------------------------------------------------------
local_listener string (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=162.12.0.7)(PORT=1521))))
remote_listener指向的是scan监听名
SQL> show parameter remote_listener
NAME TYPE VALUE
----------------- ----------- ------------------------------
remote_listener string cqltjcptscan:1521
切换至grid用户
[root@cqltjcpt2 ~]# su - grid
[grid@cqltjcpt2 ~]$ cd $ORACLE_HOME/network/admin
[grid@cqltjcpt2 admin]$ ls
endpoints_listener.ora listener.ora samples shrept.lst sqlnet.ora
查看监听文件内容
[grid@cqltjcpt2 admin]$ more listener.ora
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1))))
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER))))
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON
最下面两行参数涉及ENABLE_GLOBAL_DYNAMIC_ENDPOINT参数，ENABLE_GLOBAL_DYNAMIC_ENDPOINT参数的作用是允许监听程序接受针对oracle 11.2版本之前未进行动态注册的连接
查看监听状态，可以看到cqltgsqz2实例已经运行
[grid@cqltjcpt2 ~]$ srvctl status listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): cqltjcpt1,cqltjcpt2
[grid@cqltjcpt2 ~]$ lsnrctl status listener
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 08-JAN-2013 10:58:30
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 07-JAN-2013 22:44:03
Uptime 0 days 12 hr. 14 min. 26 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/oracle/grid/network/admin/listener.ora
Listener Log File /u01/oracle/app/oracle/diag/tnslsnr/cqltjcpt2/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=162.12.0.3)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=162.12.0.7)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM2", status READY, has 1 handler(s) for this service...
Service "cqlthxqf" has 1 instance(s).
Instance "cqlthxqf2", status READY, has 1 handler(s) for this service...
Service "cqlthxqfXDB" has 1 instance(s).
Instance "cqlthxqf2", status READY, has 1 handler(s) for this service...
Service "cqlthxqz" has 1 instance(s).
Instance "cqlthxqz2", status READY, has 1 handler(s) for this service...
Service "cqlthxqzXDB" has 1 instance(s).
Instance "cqlthxqz2", status READY, has 1 handler(s) for this service...
Service "cqltjcpt" has 1 instance(s).
Instance "cqltjcpt2", status READY, has 1 handler(s) for this service...
Service "cqltjcptXDB" has 1 instance(s).
Instance "cqltjcpt2", status READY, has 1 handler(s) for this service...
The command completed successfully
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