Oracle Data Guard创建物理Standby数据库
创建物理备库
机器名 a1 a2
IP: 192.168.1.10 192.168.1.20
Net_Name a1 a2
SID a1 a2
DB_UNIQUE_NAME a1 a2
注：主节点上创建数据库a1,备节点上只安装oracle软件不创建任何数据库;
1.配置listener.ora
主节点listener.ora：
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=a1)
(ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1)
(SID_NAME=a1)
)
)
LISTENER =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.10)(PORT=1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
)
备节点listener.ora:
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=a1)
(ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1)
(SID_NAME=a1)
)
)
LISTENER =
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.20)(PORT=1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY))
)
2.配置tnsnames.ora(主备节点的tnsname.ora内容一样：)
a1=
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.10)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = a1)
)
)
a2=
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.20)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = a2)
)
)
3.在主库启用归档并且启用强制归档
步骤1：alter database force logging;
archive log list;
步骤2：在mount状态下
alter database archivelog;
步骤3：alter database open;
archive log list;
4.在主库上创建密码文件
orapwd file='/u01/app/oracle/product/11.2.0/db_1/dbs/orapwa1.ora' password=xyc entries=10
5.创建standby redo log
alter database add standby logfile
group 4 ('/u01/app/oracle/oradata/a1/standby_redo04a.log','/u01/app/oracle/oradata/a1/standby_redo04b.log') size 50m,
group 5 ('/u01/app/oracle/oradata/a1/standby_redo05a.log','/u01/app/oracle/oradata/a1/standby_redo05b.log') size 50m,
group 6 ('/u01/app/oracle/oradata/a1/standby_redo06a.log','/u01/app/oracle/oradata/a1/standby_redo06b.log') size 50m,
group 7 ('/u01/app/oracle/oradata/a1/standby_redo07a.log','/u01/app/oracle/oradata/a1/standby_redo07b.log') size 50m;
注意：Oracle 建议你在创建 standby 时就考虑 standby redolog 配置的问题。standby redologs 与 online redologs
非常类似，应该说两者只是服务对象不同，其它参数属性甚至操作的命令格式几乎都一样，你在设计 standby
redologs 的时候完全可以借鉴创建 online redologs 的思路，比如多个文件组啦，每组多个文件冗余之类的。
除些之外呢，oracle 提供了一些标准的建议如下：
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