今天终于把DG实验做完 中间出了不少问题,在网络和同事的帮助下,一一把问题解决
实验环境:
实验类型:同一主机上用RMAN备份建立物理备用数据库
OS:WindowsXP
实例名:主库orcl 备库standby
前提准备
. 设置主数据库为force logging 模式
SQL>sqlplus "/as sysdba"
SQL>alter database force logging;
. 设置主数据库为归档模式
SQL> archive log list
SQL> shutdown immediate
SQL> startup mount
SQL> alter database archivelog;
SQL> archive log list
1、RMAN全备份主库(orcl):
rman target sys/oracle@orcl
backup database plus archivelog;
backup current controlfile for standby;
2、建立存放standby库相关的OS目录
mkdir d:\standby
mkdir d:\standby\bdump
mkdir d:\standby\udump
mkdir d:\standby\archive
mkdir d:\standby\d:\standby\flash_recovery_area
3、建立列程服务standby实例以及密码
oradim -new -sid standby -intpwd oracle
4、配置监听程序和网络服务名(在这里我把配置好的贴出来)主库的
listener.ora
# listener.ora Network Configuration File: d:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = d:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = dell-jason)(PORT = 1521))
)
)
tnsname.ora
# tnsnames.ora Network Configuration File: D:\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dell-jason)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
STANDBY =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = dell-jason)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = standby)
)
)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
5、准备主数据参数文件。
sqlplus sys/oracle@orcl as sysdba
create pfile from spfile;
编辑参数文件initorcl.ora 具体在D:\oracle\product\10.2.0\db_1\database目录下如下(我这里只添加要加的内容):
db_unique_name=orcl
log_archive_dest_1='location=D:\oracle\product\10.2.0\flash_recovery_area valid_for=(all_logfiles,all_roles) db_unique_name=orcl'
log_archive_dest_4='SERVICE=standby valid_for=(online_logfiles,primary_role) db_unique_name=standby'
standby_file_management=AUTO
log_archive_config='dg_config=(orcl,standby)'
fal_server=standby
fal_client=orcl
建立服务器参数文件spfile
shutdown immediate
create spfile from pfile='C:\oracle\product\10.2.0\db_1\database\initorcl.ora';
startup;
6、准备备用参数文件。
sqlplus sys/oracle@orcl as sysdba
create pfile='D:\oracle\product\10.2.0\db_1\database\initstandby.ora' from spfile;
建好standby的参数文件后打开,在D:\oracle\product\10.2.0\db_1\database\initstandby.ora下编辑参数文件(我这里只填需要加的)
db_unique_name=standby
service_names=standby
instance_name=standby
control_files=d:\standby\control01.ctl
log_archive_dest_1='location=d:\standby\archive valid_for=(all_logfiles,all_roles) db_unique_name=standby'
log_archive_dest_2='SERVICE=orcl valid_for=(online_logfiles,primary_role) db_unique_name=orcl'
db_file_name_convert='D:\oracle\product\10.2.0\oradata\orcl','d:\standby'
log_file_name_convert='D:\oracle\product\10.2.0\oradata\orcl','d:\standby'
log_archive_config='dg_config=(orcl,standby)'
fal_server=orcl
fal_client=standby
standby_file_management=AUTO
standby_archive_dest='d:\standby\archive'
background_dump_dest='d:\standby\bdump'
user_dump_dest='d:\standby\udump'
建立服务器参数文件(在主库)
sqlplus sys/oracle@orcl as sysdba
create spfile='D:\oracle\product\10.2.0\db_1\database\spfilestandby.ora' from pfile= 'D:\oracle\product\10.2.0\db_1\database\initstandby.ora';
7、启用备用例程并建立备用数据库,在建立备用数据库时备用数据库必须以nomount方式启动如下:
set oracle_sid=standby
sqlplus sys/oracle as sysdba
startup nomount
启用例程后用RMAN恢复到备库如下:
这步骤之前先必须把主库日志切换:在主库中执行alter system switch logfile;
set oracle_sid=standby
rman target sys/oracle@orcl auxiliary sys/oracle
rman下执行:duplicate target database for standby dorecover;
这些备库就完全恢复
8、启用备用数据库
set oracle_sid=standby
sqlplus sys/oracle as sysdba
startup force mount;
conn sys/oracle@orcl as sysdba
alter system switchi logfile;
conn sys/oracle@standby as sysdba
select name from v$archivelog;看看有没有日志传过来,传过来表示DG配置成功,若没有仔细检查你的参数文件。
9、在备库上增加临时表空间
alter database open
alter tablespace temp add tempfile 'd:\standby\temp.dbf' size 5m reuse;
测试 在主库中建一张表后执行alter system switch logfile;
后在备库将备库转为重做应用状态:alter database recover managed standby database disconnect from session;
然后取消重做应用:alter database recover managed standby database cancel
这样就能在备库查到你在主库建的表了