11Gr2 RAC 修改scan IP

11Gr2环境需要更改scan ip, 基本的原理就是更改DNS或者hosts文件内的IP地址，然后通过srvctl 命令去同步CRS内的信息，完成scan ip的修改。 Before, need modify all the node /etc/hosts, set the new ip address. 1. Stop the SCAN listener and the SCAN V

11Gr2环境需要更改scan ip, 基本的原理就是更改DNS或者hosts文件内的IP地址，然后通过srvctl 命令去同步CRS内的信息，完成scan ip的修改。

Before, need modify all the node /etc/hosts,  set the new ip address.

1.
Stop the SCAN listener and the SCAN VIP resources:

2.需要先停止服务，测试时候由于没有停止服务，最后出现scan listener没有启动，后手动启动，同时parameter remote_listener值丢失，重新设置的。
# $GRID_HOME/bin/srvctl stop scan_listener
# $GRID_HOME/bin/srvctl stop scan
# $GRID_HOME/bin/srvctl status scan

<ol>
<li><span><span>SCAN VIP scan1 is enabled </span></span></li>
<li><span>SCAN VIP scan1 is not running </span></li>
</ol>

# $GRID_HOME/bin/srvctl status scan_listener
 

<ol>
<li><span><span>SCAN Listener LISTENER_SCAN1 is enabled </span></span></li>
<li>
<span>SCAN listener LISTENER_SCAN1 is not running </span><span> </span>
</li>
</ol>

3.
# To check the current IP address(es) of the SCAN VIPs, run the following commands as the root user:
$GRID_HOME/bin/srvctl config scan

<ol>
<li><span><span>SCAN name: qr01-scan, Network: 1/192.0.2.0/255.255.255.0/eth0 </span></span></li>
<li><span>SCAN VIP name: scan1, IP: /qr01-scan.example.com/192.0.2.21 </span></li>
</ol>

4.
# Next refresh the SCAN VIPs with the new IP addresses from the DNS entry:
$GRID_HOME/bin/srvctl modify scan -n
5.
# To check if the SCAN VIPs have been changed, run the following command, it should now show the new IP addresses.
$GRID_HOME/bin/srvctl config scan

<ol>
<li><span><span>SCAN name: qr01-scan, Network: 1/192.0.2.0/255.255.255.0/eth0 </span></span></li>
<li><span>SCAN VIP name: scan1, IP: /qr01-scan.example.com/192.0.2.31 </span></li>
</ol>

6.
Start SCAN and the SCAN listener:
# $GRID_HOME/bin/srvctl start scan
# $GRID_HOME/bin/srvctl start scan_listener
7.
check parameter
SQL> show parameter remote

<ol>
<li><span><span>NAME                                 TYPE        VALUE </span></span></li>
<li><span>------------------------------------ ----------- ------------------------------ </span></li>
<li><span>remote_listener                      string      qr01-scan:1521 </span></li>
</ol>

8.
check listener status

$ps -ef|grep tns

<ol>
<li><span><span>oracle    4992     1  0 16:12 ?        00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER_SCAN1 -inherit </span></span></li>
<li><span>oracle    5004     1  0 16:12 ?        00:00:00 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER -inherit </span></li>
<li><span>oracle    9816  5529  0 17:45 pts/0    00:00:00 grep tns </span></li>
</ol>

需要到grid用户下执行下面命令
$lsnrctl status LISTENER_SCAN1

 

<ol>
<li><span><span>LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 07-MAY-2012 17:46:25 </span></span></li>
<li><span> </span></li>
<li><span>Copyright (c) 1991, 2010, Oracle.  All rights reserved. </span></li>
<li><span> </span></li>
<li><span>Connecting to (<span>DESCRIPTION</span><span>=(</span><span>ADDRESS</span><span>=(</span><span>PROTOCOL</span><span>=</span><span>IPC</span><span>)(</span><span>KEY</span><span>=</span><span>LISTENER_SCAN1</span><span>))) </span></span></li>
<li><span>STATUS of the LISTENER </span></li>
<li><span>------------------------ </span></li>
<li><span>Alias                     LISTENER_SCAN1 </span></li>
<li><span>Version                   TNSLSNR for Linux: Version 11.2.0.2.0 - Production </span></li>
<li><span>Start Date                07-MAY-2012 12:12:11 </span></li>
<li><span>Uptime                    0 days 1 hr. 34 min. 14 sec </span></li>
<li><span>Trace Level               off </span></li>
<li><span>Security                  ON: Local OS Authentication </span></li>
<li><span>SNMP                      OFF </span></li>
<li><span>Listener Parameter File   /u01/app/11.2.0/grid/network/admin/listener.ora </span></li>
<li><span>Listener Log File         /u01/app/11.2.0/grid/log/diag/tnslsnr/qr01db02/listener_scan1/alert/log.xml </span></li>
<li><span>Listening Endpoints Summary... </span></li>
<li><span>  (<span>DESCRIPTION</span><span>=(</span><span>ADDRESS</span><span>=(</span><span>PROTOCOL</span><span>=</span><span>ipc</span><span>)(</span><span>KEY</span><span>=</span><span>LISTENER_SCAN1</span><span>))) </span></span></li>
<li><span>  (<span>DESCRIPTION</span><span>=(</span><span>ADDRESS</span><span>=(</span><span>PROTOCOL</span><span>=</span><span>tcp</span><span>)(</span><span>HOST</span><span>=</span><span>192</span><span>.0.2.31)(</span><span>PORT</span><span>=</span><span>1521</span><span>))) </span></span></li>
<li><span>Services Summary... </span></li>
<li><span>Service "dbm.example.com" has 2 instance(s). </span></li>
<li><span>  Instance "dbm1", status READY, has 1 handler(s) for this service... </span></li>
<li><span>  Instance "dbm2", status READY, has 1 handler(s) for this service... </span></li>
<li><span>Service "dbmXDB.example.com" has 2 instance(s). </span></li>
<li><span>  Instance "dbm1", status READY, has 1 handler(s) for this service... </span></li>
<li><span>  Instance "dbm2", status READY, has 1 handler(s) for this service... </span></li>
<li><span>The command completed successfully </span></li>
</ol>