Oracle9i DataGuard的安装与维护

　　一、安装

　　环境：

　　Primary 数据库：sun01

　　Standby 数据库：sun02

　　Oracle_Sid:bnet

　　1. 拷贝$ORACLE_BASE 到新机器上

　　2. 让Primary数据库处于归档模式，对Primary数据库做一个Rman热备份　　startup mount
　　alter database archivelog;
　　archive log list;
　　rman target sys/oracle
　　backup database format "/....";

　　3.创建Data Guard数据库控制文件alter database create standby controlfile as '/....ctl';

　　4.设置监听　　Primary：
　　bnetguard =
　　( (DESCRIPTION =
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = sun02)(PORT = 1522))
　　)
　　(CONNECT_DATA =
　　(SERVER = DEDICATED)
　　(SERVICE_NAME = bnet)
　　)
　　)
　　Standby:
　　listener.ora
　　LISTENER =
　　(DESCRIPTION_LIST =
　　(DESCRIPTION =
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
　　)
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = sun01)(PORT = 1522))
　　)
　　)
　　)
　　tnsname.ora
　　bnet =
　　( (DESCRIPTION =
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = sun02)(PORT = 1522))
　　)
　　(CONNECT_DATA =
　　(SERVER = DEDICATED)
　　(SERVICE_NAME = bnet)
　　)
　　)

　　5. 设置主机参数

alter database force logging;

　　主库强制归档

　　主机参数：　　fal_client=bnetguard
　　fal_server=bnet
　　standby_file_management=auto
　　remote_login_passwordfile=exclusive

　　备机参数：　　db_file_name_convert
　　log_file_name_convert
　　standby_file_management='AUTO'
　　standby_archive_dest=/export/home/oracle/oradata/bnet/arch

　　6.创建standby 数据库　　orapwd
　　sqlplus "sys/oracle as sysdba"
　　startup nomount pfile='''
　　alter database mount standby database;
　　exit
　　rman target sys/oracle nocatalog
　　restore database

　　7.设置自动归档alter system set log_archive_dest_2='server=bnetguard reopen=200'

　　8.启动Data Guard自动恢复状态　　sqlplus "sys/oracle as sysdba"<
　　recover managed standby database;
　　exit
　　EOF

　　9.测试alter system archive log current;

　　二、维护：

　　使Standby 数据库处与 read-only状态reover cancel/recover managed standby database cancel;

　　取消恢复模式alter database open read only;

　　启动数据库到只读状态recover standby database;

　　使数据库切换到恢复模式recover managed standby database time out 15;

　　如果超过15分钟没有传日志　　Restarting dead background process QMN0
　　"Restarting dead background process QMN" message can continually
　　appear in the alert log during startup in RAC environment.
　　Workaround:
　　Set aq_tm_processes=0 in the init.ora.
　　It can be set to desired value through
　　"alter system set aq_tm_processes=n" once the database is open completely.
　　alter database activate standby database;