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
SCAN VIP scan1 is enabled SCAN VIP scan1 is not running
# $GRID_HOME/bin/srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled SCAN listener LISTENER_SCAN1 is not running
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
SCAN name: qr01-scan, Network: 1/192.0.2.0/255.255.255.0/eth0 SCAN VIP name: scan1, IP: /qr01-scan.example.com/192.0.2.21
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
SCAN name: qr01-scan, Network: 1/192.0.2.0/255.255.255.0/eth0 SCAN VIP name: scan1, IP: /qr01-scan.example.com/192.0.2.31
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
NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ remote_listener string qr01-scan:1521
8.
check listener status
$ps -ef|grep tns
oracle 4992 1 0 16:12 ? 0 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER_SCAN1 -inherit oracle 5004 1 0 16:12 ? 0 /u01/app/11.2.0/grid/bin/tnslsnr LISTENER -inherit oracle 9816 5529 0 17:45 pts/0 0 grep tns
需要到grid用户下执行下面命令
$lsnrctl status LISTENER_SCAN1
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 07-MAY-2012 17:46:25 Copyright (c) 1991, 2010, Oracle. All rights reserved. Connecting to ( DESCRIPTION =( ADDRESS =( PROTOCOL = IPC )( KEY = LISTENER_SCAN1 ))) STATUS of the LISTENER ------------------------ Alias LISTENER_SCAN1 Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production Start Date 07-MAY-2012 12:12:11 Uptime 0 days 1 hr. 34 min. 14 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /u01/app/11.2.0/grid/network/admin/listener.ora Listener Log File /u01/app/11.2.0/grid/log/diag/tnslsnr/qr01db02/listener_scan1/alert/log.xml Listening Endpoints Summary... ( DESCRIPTION =( ADDRESS =( PROTOCOL = ipc )( KEY = LISTENER_SCAN1 ))) ( DESCRIPTION =( ADDRESS =( PROTOCOL = tcp )( HOST = 192 .0.2.31)( PORT = 1521 ))) Services Summary... Service "dbm.example.com" has 2 instance(s). Instance "dbm1", status READY, has 1 handler(s) for this service... Instance "dbm2", status READY, has 1 handler(s) for this service... Service "dbmXDB.example.com" has 2 instance(s). Instance "dbm1", status READY, has 1 handler(s) for this service... Instance "dbm2", status READY, has 1 handler(s) for this service... The command completed successfully
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