之前演示的switchver总是提示下面的错误,并且需要人工干预:
Oracle11gr2_ADG管理之switchover实战
DGMGRL> switchover to snewtest;
Warning: You are no longer connected to ORACLE.
Please complete the following steps to finish switchover:
start up instance "newtest" of database "newtest"
解决方案
1.主库上配置 listener.ora
[oracle@localhost admin]$ vi listener.ora
# listener.ora Network Configuration File: /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = newtest)
(ORACLE_HOME = /home/oracle/app/oracle/product/11.2.0/dbhome_1/)
(SID_NAME = newtest)
)
(SID_DESC =
(GLOBAL_DBNAME = newtest_DGMGRL)
(ORACLE_HOME = /home/oracle/app/oracle/product/11.2.0/dbhome_1/)
(SID_NAME = newtest)
)
)
2.备库上配置 listener.ora
[oracle@localhost ~]$ cd /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/
[oracle@localhost admin]$ vi listener.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = newtest)
(ORACLE_HOME = /home/oracle/app/oracle/product/11.2.0/dbhome_1/)
(SID_NAME = newtest)
)
(SID_DESC =
(GLOBAL_DBNAME = snewtest_DGMGRL)
(ORACLE_HOME = /home/oracle/app/oracle/product/11.2.0/dbhome_1/)
(SID_NAME = newtest)
)
)
3. 主备库重启lsrnctl
lsrnctl stop
lsrnctl start
任何库上执行切换
[oracle@localhost admin]$ dgmgrl sys/oracle@newtest
DGMGRL for Linux: Version 11.2.0.4.0 - 64bit Production
Copyright (c) 2000, 2009, Oracle. All rights reserved.
Welcome to DGMGRL, type "help" for information.
Connected.
切换到备库
DGMGRL> swithover to snewtest
Unrecognized command "swithover", try "help"
DGMGRL> switchover to snewtest;
Performing switchover NOW, please wait...
Operation requires a connection to instance "newtest" on database "snewtest"
Connecting to instance "newtest"...
Connected.
New primary database "snewtest" is opening...
Operation requires startup of instance "newtest" on database "newtest"
Starting instance "newtest"...
ORACLE instance started.
Database mounted.
Database opened.
Switchover succeeded, new primary is "snewtest"
切换回主库
DGMGRL> switchover to newtest;
Performing switchover NOW, please wait...
Operation requires a connection to instance "newtest" on database "newtest"
Connecting to instance "newtest"...
Connected.
New primary database "newtest" is opening...
Operation requires startup of instance "newtest" on database "snewtest"
Starting instance "newtest"...
ORACLE instance started.
Database mounted.
Database opened.
Switchover succeeded, new primary is "newtest"