MMA的东西，正好手上有机器，以前老偷懒不写过程，现在也要给写出来作手册。。。。[@more@]

其实配置过程对老手来说可能就花在备份数据库上了呵呵

下面以prdb作为primary，lstdb作为standby，用lstdb做名字是因为接下来一篇还要把physical standby(dataguard)转换成逻辑的standby(logical standby)

这里介绍一个快速装dataguard的方法，就是索性在standby端直接dbca安装一个数据库，这样必要的文件夹有了，密码文件也不需要从primary传过来了，监听也有现成的了。新手犯错误的概率会降低很多。

prdb端：

首先修改设置：

ALTER DATABASE FORCE LOGGING;

alter system set log_archive_dest_1='location=+data/prdb/arch valid_for=(all_logfiles,all_roles) db_unique_name=prdb' scope=both;

alter system set standby_archive_dest='location=+data/prdb/arch' scope=both;

alter system set fal_client='prdb' scope=both;

alter system set fal_server='lstdb' scope=both;

alter system set db_file_name_convert='+data/lstdb','+data/prdb' scope=spfile;

alter system set log_file_name_convert='+data/lstdb','+data/prdb' scope=spfile;

alter system set standby_file_management=auto scope=both;

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

startup mount force 让参数生效

alter database archivelog; 打开归档模式

然后进行备份:

rman target /

BACKUP DEVICE TYPE DISK FORMAT '/nas_data/orabackup/%U' DATABASE plus ARCHIVELOG;

BACKUP DEVICE TYPE DISK FORMAT '/nas_data/orabackup/st_%U' CURRENT CONTROLFILE FOR STANDBY;

备份完以后最好运行一下

alter system archive log current;

否则如果传送到standby端开始duplicate的时候,primary还没有切换过日志,那么会报错找不到可用的控制文件备份.

把备份传送到standby端同样的目录.

lstdb:

startup nomount pfile='pst.ora'

create spfile='+DATA/lstdb/spfilelstdb.ora' from pfile='pst.ora';

startup nomount force;

就可以了pst.ora是参数文件，后面会贴出来。

然后进行复制备用数据库：

rman target auxiliary /

DUPLICATE TARGET DATABASE FOR STANDBY DORECOVER;

复制最后可能会报一些错误如：

Oracle Error:

ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below

ORA-01152: file 1 was not restored from a sufficiently old backup

ORA-01110: data file 1: '+DATA/lstdb/datafile/system.272.676722947'

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of Duplicate Db command at 01/21/2009 10:36:20

RMAN-03015: error occurred in stored script Memory Script

RMAN-06053: unable to perform media recovery because of missing log

RMAN-06025: no backup of log thread 2 seq 7 lowscn 542060 found to restore

RMAN-06025: no backup of log thread 2 seq 6 lowscn 541904 found to restore

RMAN-06025: no backup of log thread 1 seq 8 lowscn 542063 found to restore

这些都没关系，只要保证日志没有缺失就可以，少的日志都可以通过FAL传送过去

完成以后就可以开始进行保护恢复了：

lstdb：

alter database recover managed standby database disconnect from session;

prdb:

alter system set log_archive_dest_2='service=lstdb reopen=120 valid_for=(online_logfiles,primary_role) db_unique_name=prdb' scope=both;

上面是最大性能，如果要作最大保护和最大可用就要添加standby redo和修改下log_archive_dest_2

dataguard的设置其实就是个经验问题，测试下双方是不是能用sys登录对方，参数设置是不是有问题。事后看看alert和arch或者lgwr的trc就差不多了。

下面是2个集群的初始化文件：

[oracle@jiaoyou1 ~]$ more pr.ora

prdb1.__db_cache_size=889192448

prdb2.__db_cache_size=889192448

prdb1.__java_pool_size=16777216

prdb2.__java_pool_size=16777216

prdb1.__large_pool_size=16777216

prdb2.__large_pool_size=16777216

prdb1.__shared_pool_size=285212672

prdb2.__shared_pool_size=285212672

prdb1.__streams_pool_size=0

prdb2.__streams_pool_size=0

*.audit_file_dest='/u01/app/oracle/admin/prdb/adump'

*.background_dump_dest='/u01/app/oracle/admin/prdb/bdump'

*.cluster_database_instances=2

*.cluster_database=true

*.compatible='10.2.0.3.0'

*.control_files='+DATA/prdb/controlfile/current.386.676829633'

*.core_dump_dest='/u01/app/oracle/admin/prdb/cdump'

*.db_block_size=8192

*.db_create_file_dest='+DATA'

*.db_domain=''

*.db_file_multiblock_read_count=16

*.db_file_name_convert='+data/lstdb','+data/prdb'

*.db_name='prdb'

*.db_unique_name='prdb'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=prdbXDB)'

*.fal_client='prdb'

*.fal_server='lstdb'

prdb1.instance_number=1

prdb2.instance_number=2

*.job_queue_processes=10

*.log_archive_dest_1='location=+data/prdb/arch valid_for=(all_logfiles,all_roles) db_unique_name=prdb'

*.log_archive_dest_2='service=lstdb reopen=120 valid_for=(online_logfiles,primary_role) db_unique_name=prdb'

*.log_file_name_convert='+data/lstdb','+data/prdb'

*.open_cursors=300

*.pga_aggregate_target=406847488

*.processes=150

*.remote_listener='LISTENERS_PRDB'

*.remote_login_passwordfile='exclusive'

*.sga_target=1222639616

*.standby_archive_dest='location=+data/prdb/arch'

*.standby_file_management='AUTO'

prdb2.thread=2

prdb1.thread=1

*.undo_management='AUTO'

prdb2.undo_tablespace='UNDOTBS2'

prdb1.undo_tablespace='UNDOTBS1'

*.user_dump_dest='/u01/app/oracle/admin/prdb/udump'

[oracle@jy1 ~]$ more pst.ora

lstdb2.__db_cache_size=1929379840

lstdb1.__db_cache_size=1862270976

lstdb2.__java_pool_size=16777216

lstdb1.__java_pool_size=16777216

lstdb2.__large_pool_size=16777216

lstdb1.__large_pool_size=16777216

lstdb2.__shared_pool_size=503316480

lstdb1.__shared_pool_size=570425344

lstdb2.__streams_pool_size=0

lstdb1.__streams_pool_size=0

*.audit_file_dest='/u01/app/oracle/admin/lstdb/adump'

*.background_dump_dest='/u01/app/oracle/admin/lstdb/bdump'

*.cluster_database_instances=2

*.cluster_database=TRUE

*.compatible='10.2.0.3.0'

*.control_files='+DATA/lstdb/controlfile/current.652.676829111'#Restore Controlfile

*.core_dump_dest='/u01/app/oracle/admin/lstdb/cdump'

*.db_block_size=8192

*.db_create_file_dest='+DATA'

*.db_domain=''

*.db_file_multiblock_read_count=16

*.db_file_name_convert='+data/prdb','+data/lstdb'

*.db_name='prdb'

*.db_unique_name='lstdb'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=lstdbXDB)'

*.fal_client='lstdb'

*.fal_server='prdb'

lstdb2.instance_number=2

lstdb1.instance_number=1

*.job_queue_processes=10

*.log_archive_dest_1='location=+data/lstdb/arch valid_for=(all_logfiles,all_roles) db_unique_name=lstdb'

*.log_archive_dest_2='service=prdb valid_for=(online_logfiles,primary_role) db_unique_name=lstdb'

*.log_file_name_convert='+data/prdb','+data/lstdb'

*.open_cursors=300

*.pga_aggregate_target=825229312

*.processes=150

*.remote_listener='LISTENERS_LSTDB'

*.remote_login_passwordfile='exclusive'

*.service_names='LSTDB'

*.sga_target=2476736512

*.standby_archive_dest='location=+data/lstdb/arch'

*.standby_file_management='AUTO'

lstdb2.thread=2

lstdb1.thread=1

*.undo_management='AUTO'

lstdb2.undo_tablespace='UNDOTBS2'

lstdb1.undo_tablespace='UNDOTBS1'

*.user_dump_dest='/u01/app/oracle/admin/lstdb/udump'