Oracle dataguard配置Step by Step

一、准备工作
1.1 设置主库的force logging模式
SQL> alter database force logging;
Database altered.
1.2 创建主库密码文件
$ orapwd file=orapw$ORACLE_SID password=thunis entries=4
1.3 配置主库standby redo log，并验证结果
SQL> alter database add standby logfile group 4('/u01/app/oradata/guard1/redo04.log') size 50m;
Database altered.
SQL> select group#, thread#, sequence#, archived, status from v$standby_log;
    GROUP#    THREAD#  SEQUENCE# ARC STATUS
---------- ---------- ---------- --- ----------
         4          0          0 YES UNASSIGNED
1.4 配置主库初始化参数文件
    DB_NAME=guard1
    DB_UNIQUE_NAME=guard1
    LOG_ARCHIVE_CONFIG='DG_CONFIG=(guard1,guard2)'
    LOG_ARCHIVE_DEST_1='LOCATION=/u01/app/flash_recovery_area/GUARD1/arch VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=guard1'
    LOG_ARCHIVE_DEST_2='SERVICE=guard2 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=guard2'
    LOG_ARCHIVE_DEST_STATE_1=ENABLE
    LOG_ARCHIVE_DEST_STATE_2=ENABLE
    REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE
    LOG_ARCHIVE_FORMAT=%t_%s_%r.arc
    LOG_ARCHIVE_MAX_PROCESSES=30
    /*以下部分为主机切换为备库使用*/
    FAL_SERVER=guard2
    FAL_CLIENT=guard1
    DB_FILE_NAME_CONVERT='guard2','guard1'
    LOG_FILE_NAME_CONVERT='/u01/app/oradata/guard2','/u01/app/oradata/guard1'
    STANDBY_FILE_MANAGEMENT=AUTO
1.5 确认主库的归档模式
SQL> startup mount
ORACLE instance started.
Total System Global Area  104857600 bytes
Fixed Size               &n