首页 > 数据库 > Oracle > RMAN创建dataguard全过程
目的:采用rman热备份在线创建Oracle HA (dataguard),实现primaryDB不关机
測試環境:
primaryDB: ip 10.202.0.1 ORACLE_SID=ygzhou DB_name=ygzhoudb DB_unique_name=ygzhoudb
standbyDB: ip 10.202.0.2 OEACLE_SID=ygzhou DB_name=ygzhoudb DB_unique_name=ygzhoudg ----------------------安裝了oracle軟體;
檢查ORACLE版本
select *from v$version;
試驗步驟:
primaryDB:
1 確認數據庫處于archive log狀態,SQL語句:SQL>archive log list;
2 開啟數據庫到force logging模式,SQL語句:SQL> alter database force logging;
3 在線修改spfile文件參數一般的方法:alter system set parameter_name= scope=spfile/both sid='*';
(1) alter system set db_unique_name=ygzhoudb scope=spfile; //設置數據庫的唯一標識
(2) alter system set log_archive_config='dg_config=(ygzhoudb,ygzhoudg)' scope=spfile;
(3) alter system set log_archive_dest_1='location=/home/data/archive/ valid_for=(all_logfiles,all_roles) db_unique_name=ygzhoudb' scope=spfile;
(4) alter system set log_archive_dest_2='service=standby lgwr async valid_for=(online_logfiles,primary_roles) db_unique_name=ygzhoudg' scope=spfile;
(5) alter system set log_archive_dest_state_1=enable scope=spfile;
(6) alter system set log_archive_dest_stat_2=enable scope=spfile;
(7) alter system set fal_client=primary scope=spfile;
(8) alter system set fal_server=standby scope=spfile;
(9) alter system set undo_management=auto scpoe=spfile; //該參數影響primaryDB與standbyDB的操作同步 http://space.itpub.net/24867586/viewspace-688734
4 為standbyDB生成pfile :from spfile
create pfile from spfile='/home/oracle/produce/10.2.0.1/dbs/initygzhou.ora';
5 rman 備份primaryDB
(1) rman target sys/oracle@primary as sysdba
(2) show all: //這里不自動備份控制文件
(3) backup full database format'/home/data/backup/fullbackup_%U';
6 生成standbyDB的控制文件
alter database create standby database controlfile as '/home/oracle/oradata/rman/standby01.ctl';
7 配置tnsoracle.ora文件 //確定配置如下
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL =ITP)(KEY = EXTPROC0))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(presentation = R0)
)
primary =
(description =
(address_list =
(address = (protocol = tcp)(host = 10.202.0.1)(port = 1521))
)
(connect_data =
(service_name = primary)
)
standby =
(description =
(address_list =
(address = (protocol = tcp)(host = 10.202.0.2)(port = 1521))
)
(connect_data =
(service_name = standby)
)
)
8 將rman 備份集、pfile、controlfile 、tnsoracle.ora文件上傳到standbyDB上
采用linux操作系統的scp命令:
scp /home/data/backup/fullbackup_%U oracle@10.202.0.2:/home/data/backup/fullbackup_%U;
scp /home/oracle/oradata/rman/standby01.ctl oracle@10.202.0.2:/home/oracle/oradata/rman/standby01.ctl ;
scp /home/oracle/produce/10.2.0.1/dbs/initoracle.ora oracle@10.202.0.2:/home/oracle/produce/10.2.0.1/dbs/initoracle.ora;
9 測試遠程登錄
tnsping primary;
tnsping standby;
sqlplus sys/oracle as sysdba@stan
standbyDB:
1 檢查文件是否拷貝過來,這里學要將文件放置在與primaryDB上備份的存儲位置相同的目錄;
2 修改pfile中的參數
vi /home/oracle/produce/10.20.0.1/dbs/initygzhou.ora //修改的參數
db_unique_name=stan
control_files='/home/oracle/oradata/rman/standby01.ctl','/home/oracle/oradata/rman/standby02.ctl','/home/oracle/oradata/rman/standby03.ctl',
log_archive_config='dg=(primary,standby)
log_archive_dest_1='location=/home/data/archive/ valid_for=(all_logfiles,all_roles) db_unique_name=ygzhoudg
log_archive_dest_2='server=prim lgwr async valid_for=(online_logfiles,primary_roles) db_uniquen_name=ygzhoudb
fal_client=standby
fal_server=primary
:wq //退出保存pfile 其他的參數不做修改
3 創建spfile,通過pfile
sqlplus "/as sysdba"
create spfile from pfile;
4 測試遠程登錄
tnsping primary;
tnsping standby;
sqlplus sys/oracle as sysdba@primary
5 開啟standbyDB到nomount狀態
startup nomount;
6 開啟數據庫到mount狀態 //此時需要用到controlfile文件,所以需要確保spfile中的control_files參數中的路徑與controlfile實際保存路徑相同
alter database mount standby database;
7 利用rman備份集還原、恢復數據庫
rman target /
restore database from '/home/data/backup/fullbackup_%U';
8 將standbyDB至于自動恢復狀態,應用redo服務
alter database recover managed standby database disconnect from session;
ok!
rman dataguard配置全過程結束;
檢驗:
在primaryDB上切換log,在standbyDB上檢測是否同步。
来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/24867586/viewspace-688605/,如需转载,请注明出处,否则将追究法律责任。