oracleADG增加备库，由一主一从变为一主多从

oracleADG增加备库

新增备库主机：

192.168.66.44

主机名：dgd

sid：orcl

网络别名：orcl_sd

下文中称之为“备2”

1，更改现在的主备文件

hosts文件，tnsnames.ora文件，initorcl.ora文件

1.1，更改hosts文件

把新增的主机加上

主：

[oracle@db dbs]$ cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.66.61 db
192.168.66.62 dg
192.168.66.64 dgd

备1：

[oracle@dg dbs]$ cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.66.61 db
192.168.66.62 dg
192.168.66.64 dgd

备2：

[oracle@dgd ~]$ cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.66.61 db
192.168.66.62 dg
192.168.66.64 dgd

1.2,修改tnsnames.ora文件

主：

#增加下面内容
[oracle@db admin]$ vim tnsnames.ora
orcl_sd =
   (DESCRIPTION =
     (ADDRESS_LIST =
       (ADDRESS = (PROTOCOL = TCP)(HOST = dgd)(PORT = 1521))
     )
     (CONNECT_DATA =
       (SERVICE_NAME = orcl)
         (SERVER = DEDICATED)
     )
 )

备1：

#增加下面内容
[oracle@dg admin]$ vim tnsnames.ora 
orcl_sd =
   (DESCRIPTION =
     (ADDRESS_LIST =
       (ADDRESS = (PROTOCOL = TCP)(HOST = dgd)(PORT = 1521))
     )
     (CONNECT_DATA =
       (SERVICE_NAME = orcl)
         (SERVER = DEDICATED)
     )
 )

备3：

[oracle@dgd admin]$ cat tnsnames.ora
# tnsnames.ora Network Configuration File: /data/app/oracle/product/11.2.0.4/db_1/network/admin/tnsnames.ora
 # Generated by Oracle configuration tools.
ORCL =
   (DESCRIPTION =
     (ADDRESS = (PROTOCOL = TCP)(HOST = dgd)(PORT = 1521))
     (CONNECT_DATA =
       (SERVER = DEDICATED)
       (SERVICE_NAME = orcl)
     )
   )
orcl_pri =
   (DESCRIPTION =
     (ADDRESS_LIST =
       (ADDRESS = (PROTOCOL = TCP)(HOST = db)(PORT = 1521))
     )
     (CONNECT_DATA =
       (SERVICE_NAME = orcl)
       (SERVER = DEDICATED)
     )
 )
orcl_sty =
   (DESCRIPTION =
     (ADDRESS_LIST =
       (ADDRESS = (PROTOCOL = TCP)(HOST = dg)(PORT = 1521))
     )
     (CONNECT_DATA =
       (SERVICE_NAME = orcl)
         (SERVER = DEDICATED)
     )
 )
orcl_sd =
   (DESCRIPTION =
     (ADDRESS_LIST =
       (ADDRESS = (PROTOCOL = TCP)(HOST = dgd)(PORT = 1521))
     )
     (CONNECT_DATA =
       (SERVICE_NAME = orcl)
         (SERVER = DEDICATED)
     )
 )

1.3，修改pfile文件

主：

#修改和增加了以下内容
[oracle@db dbs]$ pwd
/data/app/oracle/product/11.2.0.4/db_1/dbs
[oracle@db dbs]$ vim initorcl.ora
*.log_archive_config='dg_config=(orcl_pri,orcl_sty,orcl_sd)'