由于环境限制，现在需要把2套rac集群通过dg复制指向远端的单机多实例上面。
rac指向第一个实例的前面已经有文档
这里直接添加第二个实例的复制搭建，主要标出不同地方
单实例环境--standby CentOS release 6.10 (Final) hostname dg1 ip 10.*.30 Instance_name cad DB_NAME bol --此次2个一样 db_unique_name cad
SQL*Plus: Release 11.2.0.4.0 Production
文件系统规划 Primary Standby DATA/bol/datafile/test01.dbf /u01/app/Oracle/oradata/cad/data tempfile data/bol/tempfile /u01/app/oracle/oradata/cad/control01.ctl fra/bol/archivelog /u01/app/oracle/fast_recovery_area/cad fra/bol/onlinelog /u01/app/oracle/oradata/orcl/cad
基本步骤与上面相同，只是实例名有不同之处
1 主库rac集群，设置为归档，和force logging模式
2 主库添加 standby Redo log 文件
3 主备库修改listener.ora 和tnsnames.ora 文件
主库与之前基本相同
备库
[oracle@dg1 admin]$ cat listener.ora # listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora # Generated by Oracle configuration tools.
SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = orcl) (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1) (SID_NAME = orcl) ) (SID_DESC = (GLOBAL_DBNAME = cad) (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1) (SID_NAME = cad) ---在主机dg1上 ，添加2个实例 ) )
LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = dg1)(PORT = 1521)) ) (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) ) )
ADR_BASE_LISTENER = /u01/app/oracle
[oracle@dg1 admin]$ cat tnsnames.ora bol= (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*.15)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*.16)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME =bol) ) )
orcl= (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*.30)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME =orcl) ) )
cad= (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 10.*.30)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME =cad) ) ) [oracle@rac07 ~]$ tnsping cad
4 在备库创建相应的目录 mkdir -p /u01/app/oracle/fast_recovery_area/cad mkdir -p /u01/app/oracle/oradata/cad/data mkdir -p /u01/app/oracle/oradata/cad/tempfile mkdir -p /u01/app/oracle/admin/cad/adump mkdir -p /u01/app/oracle/admin/cad/data mkdir -p /u01/app/oracle/admin/cad/redo mkdir -p /u01/app/oracle/admin/cad/tempfile mkdir -p /u01/app/oracle/archive/cad
5 修改主备库参数和把主库密码文件cp到备库 --备库参数文件 cad.__db_cache_size=469762048 cad.__java_pool_size=16777216 cad.__large_pool_size=33554432 cad.__pga_aggregate_target=654311424 cad.__sga_target=956301312 cad.__shared_io_pool_size=0 cad.__shared_pool_size=385875968 cad.__streams_pool_size=33554432 *.audit_file_dest='/u01/app/oracle/admin/cad/adump' *.audit_trail='db' *.compatible='11.2.0.4.0' *.control_files='/u01/app/oracle/oradata/cad/control01.ctl','/u01/app/oracle/fast_recovery_area/cad/control02.ctl' *.db_block_size=8192 *.db_domain='' *.db_file_name_convert=' DATA/bol/datafile','/u01/app/oracle/oradata/cad/data',' DATA/bol/tempfile','/u01/app/oracle/oradata/cad/tempfile' *.db_name='bol' *.service_names='cad' *.db_unique_name='cad' *.db_recovery_file_dest='/u01/app/oracle/fast_recovery_area/cad' *.db_recovery_file_dest_size=6005194752 *.diagnostic_dest='/u01/app/oracle' *.dispatchers='(PROTOCOL=TCP) (SERVICE=bolXDB)' *.fal_server='cad' *.log_archive_config='dg_config=(bol,cad)' *.log_archive_dest_1='location=/u01/app/oracle/archive/cad valid_for=(all_logfiles,all_roles) db_unique_name=cad' *.log_archive_dest_2='service=bol valid_for=(online_logfiles,primary_role) db_unique_name=bol' *.log_archive_dest_state_1='ENABLE' *.log_archive_dest_state_2='ENABLE' *.log_archive_format='%t_%s_%r.arch' *.log_file_name_convert=' FRA/bol/onlinelog','/u01/app/oracle/admin/cad/redo' *.memory_target=1606418432 *.open_cursors=300 *.processes=500 *.remote_login_passwordfile='exclusive' *.standby_file_management='auto' *.undo_tablespace='UNDOTBS1'
6 使用 spfile 将备库启动 nomount 状态并启动监听
7 备库进行duplicate
export ORACLE_SID=cad rman target sys/****@10.*.29/bol auxiliary sys/****@cad nocatalog
8 开启dg复制
