因为需要一份DG的搭建文档，Linux端的详细文档很多，但是网上的Windows端的文档却总是写的不是特别详细，所以参考多位博主，实验多次总结一份搭建成功的配置文档。

DG搭建说明：本文档为Oracle数据库在windows环境下的DG搭建。

一、物理规划

数据库要求：

Oracle database 11gR2(数据库版本相同)
备库数据库仅安装软件，不建库
安装路径相同，实例名相同（便于安装维护管理）
具体安装路径为E:\app\Administrato

作系统要求：

Windows server 2008 R2（操作系统版本相同）

说明：服务器环境为VM搭建的两台虚拟机，操作系统为Windows Server 2008 R2，数据库为Oracle11gR2，安装目录实例名全部相同，archivelog下的arch文件夹为手动创建。

二、配置过程

1.主库配置

主库启动到mount状态下开启归档和force logging

SQL> startup mount;
SQL> alter database archivelog;
SQL> alter database force logging;

查看当前日志组，并为备库创建日志文件

SQL> select * from v$logfile order by group#;
SQL> alter database add standby logfile group 4 ('E:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO04.LOG') size 50m;
SQL> alter database add standby logfile group 5 ('E:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO05.LOG') size 50m;
SQL> alter database add standby logfile group 6 ('E:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO06.LOG') size 50m;

创建备库standby的控制文件

SQL> alter database create standby controlfile as ‘E:\APP\ADMINISTRATOR\flash_recovery_area\orcl\arch\standby.ctl’;

创建参数文件

SQL> create pfile from spfile;
默认参数文件位置为：
E:\app\Administrator\product\11.2.0\dbhome_1\database

编辑参数文件initorcl.ora

orcl.__db_cache_size=343932928
orcl.__java_pool_size=4194304
orcl.__large_pool_size=4194304
orcl.__oracle_base='E:\app\Administrator'#ORACLE_BASE set from environment
orcl.__pga_aggregate_target=343932928
orcl.__sga_target=515899392
orcl.__shared_io_pool_size=0
orcl.__shared_pool_size=155189248
orcl.__streams_pool_size=0
*.audit_file_dest='E:\app\Administrator\admin\orcl\adump'
*.audit_trail='db'
*.compatible='11.2.0.0.0'
*.control_files='E:\app\Administrator\oradata\orcl\control01.ctl','E:\app\Administrator\flash_recovery_area\orcl\control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='orcl'
*.db_recovery_file_dest='E:\app\Administrator\flash_recovery_area'
*.db_recovery_file_dest_size=4102029312
*.diagnostic_dest='E:\app\Administrator'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.memory_target=858783744
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.undo_tablespace='UNDOTBS1'
#以下为新加部分
*.db_unique_name='primary'
*.archive_lag_target=1800
*.fal_client='standby'
*.fal_server='primary'
*.log_archive_config='DG_CONFIG=(primary,standby)'
*.log_archive_dest_1='LOCATION=E:\app\Administrator\flash_recovery_area\orcl\arch VALID_FOR=(all_logfiles,all_roles) db_unique_name=primary'
*.log_archive_dest_2='service=standby arch async valid_for=(online_logfiles,primary_role) db_unique_name=standby'
*.log_archive_dest_state_1='enable'
*.log_archive_dest_state_2='enable'
*.log_archive_format='%t_%s_%r.dbf'
*.DB_FILE_NAME_CONVERT='E:\app\Administrator\oradata\orcl','E:\app\Administrator\oradata\orcl'
*.LOG_FILE_NAME_CONVERT='E:\app\Administrator\flash_recovery_area\orcl\arch','E:\app\Administrator\flash_recovery_area\orcl\arch'
*.standby_file_management='auto'

使用修改过后的参数文件启动数据库

SQL> startup pfile=’ E:\app\Administrator\product\11.2.0\dbhome_1\database\initorcl.ora’;
SQL> create spfile from pfile=’ E:\app\Administrator\product\11.2.0\dbhome_1\database\initorcl.ora’;
SQL> shutdown immediate;
SQL> startup;

创建密码文件

密码文件存放于
E:\app\Administrator\product\11.2.0\dbhome_1\database目录,文件名为PWDorcl.ora(orcl为实例名)
若以下目录找不到，则手动创建，命令为：
SQL> orapwd file=E:\app\Administrator\product\11.2.0\dbhome_1\database\PWDorcl.ora password=123 entries=10

配置网络监听

文件位置为E:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora修改listener.ora文件：
# listener.ora Network Configuration File: E:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
  )
#原有基础添加一个SID_DESC
    (SID_DESC = 
	(GLOBAL_DBNAME = orcl)
	(ORACLE_HOME = E:\app\Administrator\product\11.2.0\dbhome_1)
	(SID_NAME = orcl)
    )
#------------------------------------------------------------------------
  )
#原有基础添加一个LISTENER
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.128)(PORT = 1521))
    )
  )
ADR_BASE_LISTENER = E:\app\Administrator

##修改tnsname.ora文件
#tnsnames.ora Network Configuration File:E:\app\Administrator\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
#Generated by Oracle configuration tools.
#添加一个PRIMARY
PRIMARY =
     (DESCRIPTION =
       (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.128) (PORT = 1521))
      )
      (CONNECT_DATA =
           (SERVICE_NAME = orcl)
      )
    )
#添加一个STANDBY
STANDBY=
    (DESCRIPTION =
       (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.131) (PORT = 1521))
      )
      (CONNECT_DATA = 
          (SERVICE_NAME = orcl)
      )
    )
ORACLR_CONNECTION_DATA=
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (CONNECT_DATA =
    (SID = CLRExtProc)
      (PRESENTATION = RO) 
   )
  )
ORCL=
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.128)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

测试监听

SQL> alter database open;
C:\Users\Administrator> lsnrctl stop
C:\Users\Administrator> lsnrctl start
C:\Users\Administrator> sqlplus username/pwd@primary as sysdba

关闭主库进行数据库冷拷贝

SQL> shutdown immediate
1. 将E:\app\Administrator目录下的admin,cfgtollogs,diag,flash_recover_area目录以及密码文件拷贝到备用库的相同路径（已存在的覆盖）
2. 将主库的listener.ora和tnsname.ora拷贝到备库相同路径
3. 将standby.ctl文件拷贝到备库E:\app\Administrator\oradata\orcl\和E:\app\Administrator\flash_recovery_area\orcl\修改为control01.ctl和control02.ctl
4. 主库备库在E:\app\Administrator\flash_recovery_area\orcl\下创建文件夹arch

2.备库配置

修改拷贝到备库的监听文件listener.ora

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.131)(PORT = 1521))
    )
  )

为备库创建实例

C:\Users\Administrator> oradim –new –sid orcl
注：如若备库中已经创建数据库，实例名为orcl，此过程可以跳过（会报错实例已存在）

启动备库监听

C:\Users\Administrator> lsnrctl start

修改拷贝到备库的参数文件initorcl.ora

orcl.__db_cache_size=343932928
orcl.__java_pool_size=4194304
orcl.__large_pool_size=4194304
orcl.__oracle_base='E:\app\Administrator'#ORACLE_BASE set from environment
orcl.__pga_aggregate_target=343932928
orcl.__sga_target=515899392
orcl.__shared_io_pool_size=0
orcl.__shared_pool_size=155189248
orcl.__streams_pool_size=0
*.audit_file_dest='E:\app\Administrator\admin\orcl\adump'
*.audit_trail='db'
*.compatible='11.2.0.0.0'
*.control_files='E:\app\Administrator\oradata\orcl\control01.ctl','E:\app\Administrator\flash_recovery_area\orcl\control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='orcl'
*.db_recovery_file_dest='E:\app\Administrator\flash_recovery_area'
*.db_recovery_file_dest_size=4102029312
*.diagnostic_dest='E:\app\Administrator'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.memory_target=858783744
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.undo_tablespace='UNDOTBS1'
#以下为新加部分
*.db_unique_name='standby'
*.archive_lag_target=1800
*.fal_client='primary'
*.fal_server='standby '
*.log_archive_config='DG_CONFIG=(primary,standby)'
*.log_archive_dest_1='LOCATION=E:\app\Administrator\flash_recovery_area\orcl\arch VALID_FOR=(all_logfiles,all_roles) db_unique_name= standby '
*.log_archive_dest_2='service= primary arch async valid_for=(online_logfiles,primary_role) db_unique_name= primary '
*.log_archive_dest_state_1='enable'
*.log_archive_dest_state_2='enable'
*.log_archive_format='%t_%s_%r.dbf'
*.DB_FILE_NAME_CONVERT='E:\app\Administrator\oradata\orcl','E:\app\Administrator\oradata\orcl'
*.LOG_FILE_NAME_CONVERT='E:\app\Administrator\flash_recovery_area\orcl\arch','E:\app\Administrator\flash_recovery_area\orcl\arch'
*.standby_file_management='auto'

使用修改的参数文件建立备库实例

SQL> startup nomount pfile=’E:\app\Administrator\product\11.2.0\dbhome_1\database\initorcl.ora’;
SQL> create spfile from pfile=’E:\app\Administrator\product\11.2.0\dbhome_1\database\initorcl.ora’;
SQL> shutdown immediate;
SQL> startup nomount;

3.使用RMAN复制数据库

对主库使用RMAN备份

C:\Users\Administrator> RMAN target /
RMAN> backup full database format=’E:\app\Administrator\flash_recovery_area\orcl\arch\FOR_STANDBY_%u_%p_%s.RMN’ include current controlfile for standby;
RMAN> sql ‘alter system archive log current’;
将产生的备份拷贝到备库相同的路径下

RMAN备份集拷贝到备库相同的路径后，继续在主库的RMAN中执行以下命令
RMAN > connect auxiliary sys/oracle@standby;
RMAN > duplicate target database for standby nofilenamecheck;

启动备库standby

C:\Users\Administrator>sqlplus / as sysdba
SQL> alter database mount standby database;
SQL> alter database recover managed standby database disconnect from session;

三、验证DG搭建是否成功

备库：
SQL> select name,open_mode,database_role,protection_mode,switchover_status from v$database;
NAME      OPEN_MODE            DATABASE_ROLE    PROTECTION_MODE      SWITCHOVER_STATUS
--------- -------------------- ---------------- -------------------- --------------------
PROD      READ ONLY WITH APPLY          PHYSICAL STANDBY MAXIMUM PERFORMANCE  NOT ALLOWED

主库：
SQL> select name,open_mode,database_role,protection_mode,switchover_status from v$database;
NAME      OPEN_MODE            DATABASE_ROLE    PROTECTION_MODE      SWITCHOVER_STATUS
--------- -------------------- ---------------- -------------------- --------------------
PROD      READ WRITE           PRIMARY          MAXIMUM PERFORMANCE  TO STANDBY

主库和备库分别执行：
SQL> select sequence#,applied from v$archived_log order by sequence#; 
SEQUENCE# APPLIED
---------- --------
        10 YES
        11 YES
        12 YES
        13 YES
        14 YES
        15 YES
        16 YES
        17 YES
        18 YES
        19 YES
如果查看从库可以看到归档日志,表示归档日志同步成功,如果APPLIED列的值为yes,表示重做应用成功。
然后可以手动切换日志
SQL> alter system switch logfile;
实验：在主库scott用户创建表，提交手动切换日志，查看备库是否创建新表。

四、开库过程中遇到的问题

SQL > alter database open read only;
……
报错ORA-10456:cannot open standby database; media recovery session may be in progress

这个的原因如下：恢复模式不可打开数据库所以先要cancel日志应用，在开启日志应用

操作流程如下:

1) alter database recover managed standby database cancel;
2) alter database open read only;
3) alter database recover managed standby database using current logfile disconnect from session;

测试情况如下：

SQL> archive log list;
Database log mode                Archive Mode
Automatic archival                 Enabled
Archive destination                +DATA
Oldest online log sequence         38
Next log sequence to archive       0
Current log sequence               39

SQL> select name,open_mode from v$database;
NAME OPEN_MODE
------------------ ----------------------------------------
orcl MOUNTED
SQL> alter database recover managed standby database cancel;
Database altered.
SQL> alter database open read only;
Database altered.
SQL> alter database recover managed standby database using current logfile disconnect from session;
Database altered.
SQL> select name,open_mode from v$database;
NAME OPEN_MODE
------------------ ----------------------------------------
RAC READ ONLY WITH APPLY

数据库开关顺序：

开库顺序：先备库、后主库（备库就像一个仆人，没事儿先候着）

关库顺序：先主库、后备库（主库就像一个主人，有事儿先撤了）

搭建完成