系统环境：
操作系统： RedHat EL4
Oracle: Oracle 10.2.0.1.0
从以上图中所示：主库为bj（db_unique_name)，备库为sh。
案例分析：
本案例采用RMAN Duplicate方式建立standby database。
A、配置主备库初始化参数
主库的初始化参数：initbj.ora
[oracle@ocmtest dbs]$ more initbj.ora
*.audit_file_dest=’/u01/app/oracle/admin/bj/adump’
*.background_dump_dest=’/u01/app/oracle/admin/bj/bdump’
*.compatible=’10.2.0.1.0′
*.control_files=’/u01/app/oracle/oradata/bj/control01.ctl’,’/u01/app/oracle/oradata/bj/control02.ctl’,’/u01/app/oracle/oradata/bj/control
03.ctl’
*.core_dump_dest=’/u01/app/oracle/admin/bj/cdump’
*.db_block_size=8192
*.db_domain=”
*.db_file_multiblock_read_count=16
*.db_name=’bj’
*.db_recovery_file_dest=’/u01/app/oracle/flash_recovery_area’
*.db_recovery_file_dest_size=2147483648
*.dispatchers='(PROTOCOL=TCP) (SERVICE=bjXDB)’
*.job_queue_processes=10
*.open_cursors=300
*.pga_aggregate_target=68157440
*.processes=150
*.remote_login_passwordfile=’EXCLUSIVE’
*.sga_target=205520896
*.undo_management=’AUTO’
*.undo_tablespace=’UNDOTBS1′
*.user_dump_dest=’/u01/app/oracle/admin/bj/udump’
以下为DG配置参数:
DB_UNIQUE_NAME=bj
LOG_ARCHIVE_CONFIG=’DG_CONFIG=(bj,sh)’
LOG_ARCHIVE_DEST_1=’LOCATION=/u01/disk1/arch/bj/ VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=bj’
LOG_ARCHIVE_DEST_2=’SERVICE=sh LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=sh’
LOG_ARCHIVE_DEST_STATE_1=ENABLE
LOG_ARCHIVE_DEST_STATE_2=ENABLE
REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE
LOG_ARCHIVE_MAX_PROCESSES=3
FAL_SERVER=sh
FAL_CLIENT=bj
DB_FILE_NAME_CONVERT=’/u01/app/oracle/oradata/sh/’,’/u01/app/oracle/oradata/bj/’
LOG_FILE_NAME_CONVERT=’/u01/app/oracle/oradata/sh/’,’/u01/app/oracle/oradata/bj/’
STANDBY_FILE_MANAGEMENT=AUTO
备库的初始化参数：initsh.ora
[oracle@ocmtest1 dbs]$ more initsh.ora
*.audit_file_dest=’/u01/app/oracle/admin/sh/adump’
*.background_dump_dest=’/u01/app/oracle/admin/sh/bdump’
*.compatible=’10.2.0.1.0′
*.control_file_record_keep_time=7
*.control_files=’/u01/app/oracle/oradata/sh/control01.ctl’,’/u01/app/oracle/oradata/sh/control02.ctl’,’/u01/app/oracle/oradata/sh/control
03.ctl’
*.core_dump_dest=’/u01/app/oracle/admin/sh/cdump’
*.db_block_size=8192
*.db_domain=”
*.db_file_multiblock_read_count=16
*.DB_FILE_NAME_CONVERT=’/u01/app/oracle/oradata/bj/’,’/u01/app/oracle/oradata/sh/’
*.db_name=’bj’
*.db_recovery_file_dest=’/u01/app/oracle/flash_recovery_area’
*.db_recovery_file_dest_size=2147483648
*.open_cursors=300
*.pga_aggregate_target=68157440
*.processes=150
*.REMOTE_LOGIN_PASSWORDFILE=’EXCLUSIVE’
*.sga_target=205520896
*.undo_management=’AUTO’
*.undo_tablespace=’UNDOTBS1′
*.user_dump_dest=’/u01/app/oracle/admin/sh/udump’
以下为DG配置参数:
*.DB_UNIQUE_NAME=’sh’
*.FAL_CLIENT=’sh’
*.FAL_SERVER=’bj’
*.job_queue_processes=10
*.LOG_ARCHIVE_CONFIG=’DG_CONFIG=(bj,sh)’
*.LOG_ARCHIVE_DEST_1=’LOCATION=/u01/disk1/arch/sh/ VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=sh’
*.LOG_ARCHIVE_DEST_2=’SERVICE=bj LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=bj’
*.LOG_ARCHIVE_DEST_STATE_1=’ENABLE’
*.LOG_ARCHIVE_DEST_STATE_2=’ENABLE’
*.log_archive_format=’arch_%t_%s_%r.log’
*.LOG_ARCHIVE_MAX_PROCESSES=3
*.LOG_FILE_NAME_CONVERT=’/u01/app/oracle/oradata/bj/’,’/u01/app/oracle/oradata/sh/’
*.STANDBY_FILE_MANAGEMENT=’AUTO’
B、在主库上建立standby 日志
对于默认的最大性能的保护方式，可以不用建立standby redo logfiles；但建立standby redo logfiles可以更好的保存redo log；standby redo日志组组数应等于或多于redo log，日志的大小应该一致。
SQL> alter database add standby logfile group 4 (‘/u01/app/oracle/oradata/bj/redo04.log’) size 50m;
SQL> alter database add standby logfile group 5 (‘/u01/app/oracle/oradata/bj/redo05.log.rdo’) size 50m;
SQL> alter database add standby logfile group 6 (‘/u01/app/oracle/oradata/bj/redo06.log’) size 50m;