一、描述
数据库版本11g,单实例ADG.
操作系统版本为SUSE 11 SP3.
主库IP：192.168.1.11
备库IP：192.168.1.12

二、需求
主库需要修改IP地址，保证ADG环境正常运行。
主库IP 改为：192.168.1.10，备库IP不变。

三、操作步骤

1、检查主备库当前是否正常运行
oracle@mmpt-SRJ:~> dgmgrl /
DGMGRL for Linux: Version 11.2.0.1.0 - 64bit Production

Copyright (c) 2000,2009,Oracle. All rights reserved.

Welcome to DGMGRL,type "help" for information.
Connected.
DGMGRL> show configuration;

Configuration - dg_broker

  Protection Mode: MaxPerformance
  Databases:
    mmpt   - Primary database
    mmptdg - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS

DGMGRL> 

2、关闭主、备库
lsnrctl stop listener
shutdown immediate;

3、修改操作系统IP地址
mmpt-SRJ:/etc/sysconfig/network # ls
config  dhcp  if-down.d  if-up.d  ifcfg-eth0  ifcfg-lo  ifcfg.template  ifroute-lo  providers  scripts
mmpt-SRJ:/etc/sysconfig/network # vi ifcfg-eth0 
BOOTPROTO='static'
BROADCAST=''
ETHTOOL_OPTIONS=''
IPADDR='192.168.1.10/24'
MTU=''
NAME='82540EM Gigabit Ethernet Controller'
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'
USERCONTROL='no'
~
~
"ifcfg-eth0" 10L,188C written    

mmpt-SRJ:/etc/sysconfig/network # /etc/init.d/network restart
Shutting down network interfaces:
    eth0      device: Intel Corporation 82540EM Gigabit Ethernet Co                                           done
.............重新使用新IP地址连接...................

4、主库修改监听文件listener.ora
oracle@mmpt-SRJ:/fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin> vi listener.ora 
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
        (GLOBAL_DBNAME = mmpt)
        (ORACLE_HOME = /fantlam/oracle/app/oracle/product/11.2.0/dbhome_1)
        (SID_NAME = mmpt)
   )
  )

LISTENER =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.10)(PORT = 1521))

4、主库修改监听文件tnsnames.ora
oracle@mmpt-SRJ:/fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin> vi tnsnames.ora
# tnsnames.ora Network Configuration File: /fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

MMPT =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.10)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = mmpt)
    )
  )

mmptdg =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.12)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = mmptdg)
    )
  )

4、主库修改hosts文件
mmpt-SRJ:~ # vi /etc/hosts
#
# hosts         This file describes a number of hostname-to-address
#               mappings for the TCP/IP subsystem.  It is mostly
#               used at boot time,when no name servers are running.
#               On small systems,this file can be used instead of a
#               "named" name server.
# Syntax:
#         
# IP-Address  Full-Qualified-Hostname  Short-Hostname
#       

127.0.0.1       localhost

# special IPv6 addresses
::1             localhost ipv6-localhost ipv6-loopback 

fe00::0         ipv6-localnet

ff00::0         ipv6-mcastprefix
ff02::1         ipv6-allnodes
ff02::2         ipv6-allrouters 
ff02::3         ipv6-allhosts
#192.168.1.11    suse11.site suse11
192.168.1.10     mmpt-SRJ mmpt-SRJ
192.168.1.12    mmpt-SRJ-dg mmpt-SRJ-dg

5、备库不需要修改listener.ora
oracle@mmpt-SRJ-dg:/fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin> cat listener.ora 
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
        (GLOBAL_DBNAME = mmptdg)
        (ORACLE_HOME = /fantlam/oracle/app/oracle/product/11.2.0/dbhome_1)
        (SID_NAME = mmptdg)
   )
  )

LISTENER =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.12)(PORT = 1521))
  )

6、备库修改监听文件tnsnames.ora
oracle@mmpt-SRJ-dg:/fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin> vi tnsnames.ora
# tnsnames.ora Network Configuration File: /fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

MMPT =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.10)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = mmpt)
    )
  )

mmptdg =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.12)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = mmpt-SRJ-dg)
    )
  )

"tnsnames.ora" 21L,529C written  

7、备库修改hosts文件
mmpt-SRJ-dg:~ # vi /etc/hosts
#
# hosts         This file describes a number of hostname-to-address
#               mappings for the TCP/IP subsystem.  It is mostly
#               used at boot time,this file can be used instead of a
#               "named" name server.
# Syntax:
#    
# IP-Address  Full-Qualified-Hostname  Short-Hostname
#

127.0.0.1       localhost

# special IPv6 addresses
::1             localhost ipv6-localhost ipv6-loopback

fe00::0         ipv6-localnet

ff00::0         ipv6-mcastprefix
ff02::1         ipv6-allnodes
ff02::2         ipv6-allrouters
ff02::3         ipv6-allhosts
192.168.1.12    mmpt-SRJ-dg mmpt-SRJ-dg
192.168.1.10    mmpt-SRJ mmpt-SRJ
~
"/etc/hosts" 24L,721C written

8、启动主备库监听，测试
lsnrctl start listener 
tnsping mmpt
tnsping mmpt-dg

输出如下：

oracle@mmpt-SRJ:~> lsnrctl start

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 17-MAY-2018 16:31:16

Copyright (c) 1991,Oracle.  All rights reserved.

Starting /fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /fantlam/oracle/app/oracle/diag/tnslsnr/mmpt-SRJ/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.10)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.10)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                17-MAY-2018 16:31:16
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /fantlam/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /fantlam/oracle/app/oracle/diag/tnslsnr/mmpt-SRJ/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.10)(PORT=1521)))
Services Summary...
Service "mmpt" has 1 instance(s).
  Instance "mmpt",status UNKNOWN,has 1 handler(s) for this service...
The command completed successfully
oracle@mmpt-SRJ:~> tnsping mmpt

TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 17-MAY-2018 16:31:26

Copyright (c) 1997,Oracle.  All rights reserved.

Used parameter files:

Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.10)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = mmpt)))
OK (0 msec)
oracle@mmpt-SRJ:~> tnsping mmptdg

TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 17-MAY-2018 16:31:31

Copyright (c) 1997,Oracle.  All rights reserved.

Used parameter files:

Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.12)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = mmptdg)))
OK (0 msec)
oracle@mmpt-SRJ:~> 

8、启动主备库
先启动备库，再启动主库
oracle@mmpt-SRJ-dg:~> sqlplus / as sysdba

sql*Plus: Release 11.2.0.1.0 Production on Thu May 17 16:32:42 2018

Copyright (c) 1982,Oracle.  All rights reserved.

Connected to an idle instance.

sql> startup
ORACLE instance started.

Total System Global Area  784998400 bytes
Fixed Size                  2217464 bytes
Variable Size             473958920 bytes
Database Buffers          306184192 bytes
Redo Buffers                2637824 bytes
Database mounted.
Database opened.
sql> 

9、验证ADG
mmpt-SRJ-dg:~ # su - oracle
oracle@mmpt-SRJ-dg:~> dgmgrl /
DGMGRL for Linux: Version 11.2.0.1.0 - 64bit Production

Copyright (c) 2000,type "help" for information.
Connected.
DGMGRL> show configuration;

Configuration - dg_broker

  Protection Mode: MaxPerformance
  Databases:
    mmpt   - Primary database
    mmptdg - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS

DGMGRL> 

10、原主库修改
edit database mmpt set property StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.10)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=mmpt)(INSTANCE_NAME=mmpt)(SERVER=DEDICATED)))'; 

11、切换测试
oracle@mmpt-SRJ-dg:~> dgmgrl /
DGMGRL for Linux: Version 11.2.0.1.0 - 64bit Production

Copyright (c) 2000,type "help" for information.
Connected.
DGMGRL> show configuration;

Configuration - dg_broker

  Protection Mode: MaxPerformance
  Databases:
    mmptdg - Primary database
    mmpt   - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS

DGMGRL> connect sys/oracle@mmpt
Connected.
DGMGRL> switchover to mmpt;
Performing switchover NOW,please wait...
New primary database "mmpt" is opening...
Operation requires shutdown of instance "mmptdg" on database "mmptdg"
Shutting down instance "mmptdg"...
ORA-01109: database not open

Database dismounted.
ORACLE instance shut down.
Operation requires startup of instance "mmptdg" on database "mmptdg"
Starting instance "mmptdg"...
ORACLE instance started.
Database mounted.
Database opened.
Switchover succeeded,new primary is "mmpt"
DGMGRL>