oracle 11gR2 搭建dataguard
1、搭建环境
主库 oracle11gR2 备库 oracle11gR2
db_name orcl orcl
db_unique_name orcl standby239
配置host文件
主库：primaryHost 备库：standbyHost
准备库都置于归档模式。
2、配置静态监听
主备库都配置
listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = /data/oracle/product/11.2.0/dbhome_1)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = /data/oracle/product/11.2.0/dbhome_1)
(SID_NAME = orcl)
)
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = /data/oracle/product/11.2.0/dbhome_1)
(PROGRAM = extproc)
)
(SID_DESC =
(GLOBAL_DBNAME = standby239)
(ORACLE_HOME = /data/oracle/product/11.2.0/dbhome_1)
(SID_NAME = orcl)
)
)
配置tnsnames.ora
主备库配置
standby239 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = standbyHost)(PORT = 1521))
(CONNECT_DATA =
(UR = A)
(SERVER = DEDICATED)
(SERVICE_NAME = standby239)
)
)
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = primaryHost)(PORT = 1521))
(CONNECT_DATA =
(UR = A)
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
3、主备库生成密码文件
使用orapwd
orapwd file=$ORACLE_HOME/dbs/orapworcl password=xxxxx ignorecase=Y
4、生成standbylog
alter database add standby logfile ('/data/oracle/flash_recovery_area/orcl/standby/standby07.log') size 50m;
alter database add standby logfile ('/data/oracle/flash_recovery_area/orcl/standby/standby05.log') size 50m;
alter database add standby logfile ('/data/oracle/flash_recovery_area/orcl/standby/standby04.log') size 50m;
alter database add standby logfile ('/data/oracle/flash_recovery_area/orcl/standby/standby06.log') size 50m;
5、修改dg参数
主库
alter system set db_unique_name=orcl scope=spfile;
alter system set log_archive_config='dg_config=(orcl,standby239)' scope=both;
alter system set log_archive_dest_1='location=/data/oracle/flash_recovery_area/ORCL valid_for=(all_logfiles,all_roles) db_unique_name=orcl' scope=both;
alter system set log_archive_dest_2='service=standby239 async lgwr valid_for=(online_logfiles,primary_role) db_unique_name=standby239' scope=both;
alter system set log_archive_dest_state_1=enable scope=both;
alter system set log_archive_dest_state_2=enable scope=both;
alter system set fal_server=standby239 scope=both;
alter system set fal_client=orcl scope=both;
alter system set standby_file_management=AUTO;
备库
alter system set db_unique_name=standby239 scope=spfile;
alter system set log_archive_config='dg_config=(orcl,standby239)' scope=both;
alter system set log_archive_dest_1='location=/data/oracle/flash_recovery_area/ORCL valid_for=(all_logfiles,all_roles) db_unique_name=standby239' scope=both;
alter system set log_archive_dest_2='service=orcl async lgwr valid_for=(online_logfiles,primary_role) db_unique_name=orcl' scope=both;
alter system set log_archive_dest_state_1=enable scope=both;
alter system set log_archive_dest_state_2=enable scope=both;
alter system set fal_server=orcl scope=both;
alter system set fal_client=standby239 scope=both;
alter system set standby_file_management=AUTO;
6、使用rman duplicate主库到备库
将备库置于未装载状态
rman target sys/xxxx auxiliary sys/xxxx@standby239
duplicate target database for standby nofilenamecheck from active database;
如果需要重命名的话，使用set newname for
7、将备库置于active dataguard模式
alter database mount standby database;
alter database open read only;
alter database recover managed standby database disconnect from session;
或者 alter database recover managed standby database using current logfile disconnect from session;（实时应用日志模式）
这样就可以实验主库和备库的状态了。