oracle 11g dgbroker搭建dataguard

前提是主安装上oracle软件和数据库，备库安装好oracle软件即可--略

主库：90.10.10.51 charles51.example.com PROD1 PROD1.example.com

备库：90.10.10.52 charles52.example.com SBDB1 SBDB1.example.com

1.配置主备的hostname

vi /etc/hosts

90.10.10.51 charles51.example.com

90.10.10.52 charles52.example.com

2.配置listener与tnsname

2.1 配置主库的listener与tnsname

vi /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =

(GLOBAL_DBNAME = PROD1_DGMGRL.example.com)

(ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1)

(SID_NAME = PROD1)

)

(SID_DESC =

(GLOBAL_DBNAME = PROD1.example.com)

(ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1)

(SID_NAME = PROD1)

)

)

vi /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora --添加主备的alias

PROD1=

(DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(HOST=PROD1.example.com)(PORT=1521))

(CONNECT_DATA=(SERVER=shared)(SERVICE_NAME=PROD1.example.com)))

SBDB1=

(DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(HOST=SBDB1.example.com)(PORT=1521))

(CONNECT_DATA=(SERVER=dedicated)(SERVICE_NAME=SBDB1.example.com)))

2.2 增加备库的listener和tnsname



vi /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

SID_LIST_LISTENER =

(SID_LIST =

(SID_DESC =

(GLOBAL_DBNAME = SBDB1_DGMGRL.example.com)

(ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1)

(SID_NAME = SBDB1)

)

(SID_DESC =

(GLOBAL_DBNAME = SBDB1.example.com)

(ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1)

(SID_NAME = SBDB1)

)

)

vi /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora --添加主备的alias

PROD1=

(DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(HOST=PROD1.example.com)(PORT=1521))

(CONNECT_DATA=(SERVER=shared)(SERVICE_NAME=PROD1.example.com)))

SBDB1=

(DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(HOST=SBDB1.example.com)(PORT=1521))

(CONNECT_DATA=(SERVER=dedicated)(SERVICE_NAME=SBDB1.example.com)))

3.配置主库的broker相关参数

3.1 配置dg_broker需要的参数

shutdown immediate;

startup mount;

alter database archivelog;

alter database open;

alter database force logging;

alter database flashback on;

alter database add standby logfile group 10 '/u01/app/oracle/oradata/PROD1/sredo10.log' size 256m;

alter database add standby logfile group 11 '/u01/app/oracle/oradata/PROD1/sredo11.log' size 256m;

alter database add standby logfile group 12 '/u01/app/oracle/oradata/PROD1/sredo12.log' size 256m;

alter database add standby logfile group 13 '/u01/app/oracle/oradata/PROD1/sredo13.log' size 256m;

alter system set db_file_name_convert='/u01/app/oracle/oradata/SBDB1/','/u01/app/oracle/oradata/PROD1/' scope=spfile;

alter system set log_file_name_convert='/u01/app/oracle/oradata/SBDB1/','/u01/app/oracle/oradata/PROD1/' scope=spfile;

alter system set standby_file_management=auto;

alter database open;

3.2 一致性关闭并备份主库

shutdown immediate;

startup

rman target /

backup full database plus archivelog;

4.建立备库

4.1 建立密码文件

cd $ORACLE_HOME/dbs

orapwd file=orapwSBDB1 password=oracle ignorecase=y

4.2 拷贝主库的参数文件到备库

strings spfilePROD1.ora >initSBDB1.ora

scp initSBDB1.ora charles52:/u01/app/oracle/product/11.2.0/dbhome_1/dbs/

4.3 修改参数文件

vi initSBDB1

*.db_name='PROD1' --除了这个参数不变以外其他的都需要把PROD1改变成SBDB1

*.db_unique_name='SBDB1' --添加此行

*.db_file_name_convert='/u01/app/oracle/oradata/PROD1/','/u01/app/oracle/oradata/SBDB1/' ; --修改

*.log_file_name_convert='/u01/app/oracle/oradata/PROD1/','/u01/app/oracle/oradata/SBDB1/' ; --修改

4.4 建立相关目录 --一定要把参数文件里用到的目录建立完

mkdir /u01/app/oracle/admin/SBDB1/adump -p

mkdir /u01/app/oracle/oradata/PROD1 -p

5.复制主数据库到备数据库

5.1 启动被数据库到nomount

export ORACLE_SID=SBDB1

sqlplus / as sysdba

create spfile from pfile;

startup nomount;

5.2 复制主数据库到备数据库

rman target sys/oracle@prod1 auxiliary sys/oracle@sbdb1

duplicate target database for standby nofilenamecheck from active database;--复制完成后备库就已经启动到mount

6.配置dg_broker

6.1 主备库都要执行

sqlplus sys/oracle@prod1 as sysdba

alter system set dg_broker_start=true;

sqlplus sys/oracle@sbdb1 as sysdba

alter system set dg_broker_start=true;

6.2 配置configuration

dgmgrl sys/oracle@prod1

create configuration dg123 as primary database is prod1 connect identifier is prod1;

add database sbdb1 as connect identifier si sbdb1 MAINTAINED AS PHYSICAL;

enable configuration;

show configuration;--看见SUCESS，那么dg就搭建成功了

7.测试数据同步

8.切换备库模式

dgmgrl sys/oracle@prod1

convert database sbdb1 to snapshot standby;--更改快照备库模式

convert database sbdb1 to physical standby;--更改到物理备库模式

switchover to SBDB1;--切换主到SBDB1;

9.打开备库到只读模式并实现同步[ADG] （11g才有的新功能）

sqlplus sys/oracle@sbdb1 as sysdba

select open_mode from v$database;

OPEN_MODE

--------

MOUNTED



alter database open;



select open_mode from v$database;

OPEN_MODE

----------

READ ONLY



alter database recover managed standby database using current logfile disconnect;--报错也不管



select open_mode from v$database; --确认是否真的正常，看见返回如下结果即正常打开了ADG

OPEN_MODE

--------------------

READ ONLY WITH APPLY



10.激活fast_failover

sqlplus sys/oracle@sbdb1 as sysdba

alter database flashback on;

sqlplus sys/oracle@prod1 as sysdba

alter database flashback on;

dbmgrl sys/oracle@prod1

enable fast_tart failover

show configuration;--看见failover enable即可，若是不肯定就做如下测试即可

start observer; --不关闭终端，另外打开dbmgrl

dbmgrl sys/oracle@prod1

shutdown abort;--关闭完成后，查看observer终端正在切换主库到sbdb1，那么failover开启成功。恢复时只需启动prod1即可

11.优化dg

rman target sys/oracle@prod1

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;

rman target sys/oracle@SBDB1

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;

sqlplus sys/oracle@prod1

alter database enable block change tracking using file '/u01/app/oracle/oradata/PROD1/block.txt';

sqlplus sys/oracle@sbdb1

alter database enable block change tracking using file '/u01/app/oracle/oradata/SBDB1/block.txt';