查看STANDBY库必须的参数

DB_UNIQUE_NAME=boston

LOG_ARCHIVE_CONFIG='DG_CONFIG=(chicago,boston)'

LOG_ARCHIVE_DEST_1='LOCATION=/usr/oradata/arch1/boston/ VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=boston'

LOG_ARCHIVE_DEST_2='SERVICE=STANDBY ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=chicago'

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=5

FAL_SERVER=chicago

FAL_CLIENT=boston

STANDBY_FILE_MANAGEMENT=AUTO

CREATE SPFILE FROM PFILE='/tmp/initboston.ora';

ALTER DATABASE ADD STANDBY LOGFILE('/usr/oradata/ora11g/standby01.dbf') size 50M;

ALTER DATABASE ADD STANDBY LOGFILE('/usr/oradata/ora11g/standby02.dbf') size 50M;

ALTER DATABASE ADD STANDBY LOGFILE('/usr/oradata/ora11g/standby03.dbf') size 50M;

ALTER DATABASE ADD STANDBY LOGFILE('/usr/oradata/ora11g/standby04.dbf') size 50M;

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT FROM SESSION;

查看那些归档日志被APPLY了

SELECT SEQUENCE#,APPLIED FROM V$ARCHIVED_LOG ORDER BY SEQUENCE#;

SEQUENCE# APP

---------- ---

26 YES

27 YES

28 YES

29 YES

30 YES

ALTER DATABASE OPEN READ ONLY;

在PRIMARY库上做些插入操作

SQL> insert into person values (1,'aa','bb');

SQL> insert into person values (2,'bb','cc');

SQL> alter system switch logfile;

在STANDBY库上可以立刻查询到对应的修改

SQL> select * from person

ID NAME NAME1

---------- -------------------- --------------------

1 aa bb