一、主库打开forcelogging

startup mount;

alter database force logging;

二、主  备 库配置监听

主：listener.oraSID_LIST_LISTENER = (SID_LIST =      (SID_DESC =             (GLOBAL_DBNAME = primary)             (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)        (SID_NAME = primary)         ))   LISTENER =  (DESCRIPTION_LIST =    (DESCRIPTION =      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))      (ADDRESS = (PROTOCOL = TCP)(HOST = primary)(PORT = 1521))    )  )  备：listener.oraSID_LIST_LISTENER = (SID_LIST =      (SID_DESC =             (GLOBAL_DBNAME = standby)             (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)        (SID_NAME = standby)         ))   LISTENER =  (DESCRIPTION_LIST =    (DESCRIPTION =      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))      (ADDRESS = (PROTOCOL = TCP)(HOST = standby)(PORT = 1521))    )  )  主、备：tnsnames.oraPRIMARY =  (DESCRIPTION =    (ADDRESS = (PROTOCOL = TCP)(HOST = primary)(PORT = 1521))    (CONNECT_DATA =      (SERVER = DEDICATED)      (SERVICE_NAME = primary)    )  ) STANDBY =  (DESCRIPTION =    (ADDRESS = (PROTOCOL = TCP)(HOST = standby)(PORT = 1522))    (CONNECT_DATA =      (SERVER = DEDICATED)      (SERVICE_NAME = standby)    )  )

三、主库配置DG参数

配置spfile信息

alter system set db_name='primary' scope=spfile;

-- 主备db_name必须一致;

alter system set db_unique_name='primary' scope=spfile;

alter system set log_archive_config='DG_CONFIG=(primary,standby)' scope=spfile;

alter system set log_archive_dest_1='LOCATION=/u01/app/oracle/fast_recovery_area valid_for=(all_logfiles,all_roles) db_unique_name=primary'  scope=spfile;

alter system set log_archive_dest_2='SERVICE=standby lgwr sync valid_for=(online_logfiles,primary_role) db_unique_name=standby' scope=spfile;

--注意每一个=前后均不能有空格，否则报错;

alter system set LOG_ARCHIVE_DEST_STATE_1=ENABLE;

alter system set LOG_ARCHIVE_DEST_STATE_2=ENABLE;

alter system set standby_file_management=AUTO scope=spfile;

alter system set log_archive_format='%t_%s_%r.arc' scope=spfile;

alter system set fal_server=primary scope=spfile;--11g中fal参数已被废除，fal-fetch archivelog 进程，一般情况下看不到此进程；

alter system set fal_client=standby scope=spfile;

shutdown abort;

startup;

四、主 备 库创建密码文件【一 至 四 保证主库处于mount或者以下】

orapwd file=orapw$ORACLE_SID password=redhat entries=5  --主库orapwd file=orapw$ORACLE_SID password=redhat entries=5  --备库

五、主库手动创建pfile并传到备库

create pfile='/tmp/initstandby.ora' from spfile;

scp -r $ORACLE_BASE/admin/  $ORACLE_BASE/diag/ $ORACLE_BASE/oradata/  $ORACLE_BASE/fast_recovery_area/ standby:/$ORACLE_BASE

六、复制数据文件到备库

scp -r $ORACLE_BASE/admin/  $ORACLE_BASE/diag/ $ORACLE_BASE/oradata/  $ORACLE_BASE/fast_recovery_area/ standby:/$ORACLE_BASE

说明：其实传过去的数据，备库并不使用。备库使用的是主库的目录！

七、利用指定的pfile复制出来的spfile打开备库到nomount状态

create spfile from pfile='$ORACLE_HOME/dbs/initstandby.ora'startup nomount;

八、备库创建相关配置参数

备库配置

利用主库传过来的pfile启动到nomount状态，并配置如下：

create spfile from pfile='$ORACLE_HOME/dbs/initstandby.ora'

startup nomount;

alter system set db_name=primary scope=spfile;

alter system set db_unique_name=standby scope=spfile;

alter system set log_archive_config='DG_CONFIG=(primary,standby)' scope=spfile;

alter system set log_archive_dest_1='LOCATION=/u01/app/oracle/fast_recovery_area valid_for=(all_logfiles,all_roles) db_unique_name=standby'  scope=spfile;

alter system set log_archive_dest_2='SERVICE=primary lgwr sync valid_for=(online_logfiles,primary_role) db_unique_name=primary' scope=spfile;

alter system set standby_file_management=AUTO scope=spfile;

alter system set log_archive_format='%t_%s_%r.arc' scope=spfile;

alter system set fal_server=standby scope=spfile;  

alter system set fal_client=primary scope=spfile;

shutdown abort;

startup nomount;

create pfile from spfile;

九、主库利用rman duplicate 创建备库

rman target sys/redhat@primary auxiliary sys/redhat@standby nocatalogduplicate target database for standby from active database nofilenamecheck;

十、查看备库并open备库

--备库创建后会自动mount

alter database open；

十一、主  备 库增加 standby 日志

a.先查看本地log大小以及路径 select a.bytes,a.members,b.status,b.member from v$log a,v$logfile b where a.group#=b.group#; b.在primary/standby创建4组standby logalter database add standby logfile group 4 '/u01/app/oracle/oradata/primary/redo04.log' size 50m ;alter database add standby logfile group 5 '/u01/app/oracle/oradata/primary/redo05.log' size 50m ;alter database add standby logfile group 6 '/u01/app/oracle/oradata/primary/redo06.log' size 50m;alter database add standby logfile group 7 '/u01/app/oracle/oradata/primary/redo07.log' size 50m;

十二、打开备库实时应用日志，打开flashback功能

recover managed standby database using current logfile disconnect from session;

注意：

主库的flashback on 可以在线打开；

备库的flashback on必须按如下步骤操作：

SQL> select flashback_on from v$database; FLASHBACK_ON------------------NO SQL> alter database recover managed standby database cancel; Database altered. SQL> alter database flashback on; Database altered. SQL>  alter database recover managed standby database disconnect from session; Database altered. SQL> select flashback_on from v$database; FLASHBACK_ON------------------YES

十三、相关测试

创建表空间以及相关数据，发现备库秒看

至此11g物理DG配置完毕！