DATA GUARD環境搭建
本文主要涉及到以下內容 一、安裝前環境配置 二、主庫配置 三、備庫配置 四、主庫複製資料庫到備庫 五、開啟備庫資料庫 六、備庫應用日誌檔案 七、查詢主備庫資料庫狀態 八、驗證資料同步 一、安裝前環境配置
1、一臺完整可用裝有ORACLE資料庫的虛擬機器作為主庫
2、一臺乾淨沒有安裝ORACLE資料庫的虛擬機器作為備庫，注意是沒有安裝ORACLE資料庫，但是軟體要提前安裝好 二、配置主庫 提前做好IP對應關係需要在主庫與備庫都配置 cat /etc/hosts
1、alter database force logging;開啟資料庫強制歸檔 2、設定資料庫歸檔
（1）startup nomount;
（2）alter database archivelog;
（3）alter database open;
（4）archive log list;
（5）修改歸檔路徑，路徑要提前存在
show parameter archive;
alter system set log_archive_dest_1 =’location=/u01/arch’;
alter system set log_archive_format =%t_%s_%r.arc; 3、主庫新增備庫日誌檔案，個數為當前日誌數+1
alter database add standby logfile '/u01/app/oracle/oradata/orcl/stdredo01.log' size 200M;
alter database add standby logfile '/u01/app/oracle/oradata/orcl/stdredo02.log' size 200M;
alter database add standby logfile '/u01/app/oracle/oradata/orcl/stdredo03.log' size 200M;
alter database add standby logfile '/u01/app/oracle/oradata/orcl/stdredo04.log' size 200M;
注意檔案大小要與原日誌檔案大小差不多。 4、查詢新增的standby logfile SQL> select group#,thread#,sequence#,archived,status from v$standby_log;
GROUP# THREAD# SEQUENCE# ARC STATUS
---------- ---------- ---------- --- ----------
4 0 0 YES UNASSIGNED
5 0 0 YES UNASSIGNED
6 0 0 YES UNASSIGNED
7 0 0 YES UNASSIGNED
SQL> select * from v$logfile;
4 STANDBY /u01/app/oracle/oradata/orcl/s NO 0
tdredo01.log
GROUP# STATUS TYPE MEMBER IS_ CON_ID
---------- ------- ------- ------------------------------ --- ----------
5 STANDBY /u01/app/oracle/oradata/orcl/s NO 0
tdredo02.log
6 STANDBY /u01/app/oracle/oradata/orcl/s NO 0
tdredo03.log
7 STANDBY /u01/app/oracle/oradata/orcl/s NO 0
tdredo04.log 5、配置靜態監聽引數
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME =/u01/app/oracle/product/12.2.0/dbhome_1)
(SID_NAME = orcl)
)
)
ADR_BASE_LISTENER = /u01/app/oracle
6、配置網路連線名
ORCL_S =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = wyuu)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl)
)
)
ORCL_P =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = wyu)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl)
)
)
配置好需要驗證是否可用，我們這裡先驗證主庫，等後續備庫配置完成再驗證備庫 tnsping orcl_p
8、後續備庫需要用到原pfile，所以這裡先將pfile拷貝到備庫一份
scp $ORACLE_HOME/dbs/initorcl.ora wyuu:`pwd` 然後修改主庫的pfile加入以下內容
*.db_name='orcl'
*.db_unique_name='orcl_p'
*.log_archive_config='dg_config=(orcl_p,orcl_s)'
*.log_archive_dest_1='location=/u01/arch valid_for=(all_logfiles,all_roles) db_unique_name=orcl_p'
*.log_archive_dest_2='service=orcl_s valid_for=(online_logfiles,primary_role) lgwr affirm sync db_unique_name=orcl_s'
*.log_archive_dest_state_1=enable
*.log_archive_dest_state_2=enable
*.standby_file_management='auto'
*.fal_server='orcl_s'
*.log_file_name_convert='/u01/app/oracle/oradata/orcl','/u01/app/oracle/oradata/orcl'
*.db_file_name_convert='/u01/app/oracle/oradata/orcl','/u01/app/oracle/oradata/orcl' 三、備庫配置 1、配置備庫的靜態監聽引數，直接將主庫的監聽檔案拷貝過來
scp $ORACLE_HOME/network/admin/listener.ora wyuu:`pwd` 2、配置網路連線名，同樣將主庫的檔案拷貝一份
scp $ORACLE_HOME/network/admin/tnsnames.ora wyuu:`pwd` 驗證網路連線名是否可用
需要在主庫及從庫都使用tnsping來驗證 3、將之前拷貝的引數檔案加入以下內容
*.db_name='orcl'
*.db_unique_name='orcl_s'
*.log_archive_config='dg_config=(orcl_p,orcl_s)'
*.log_archive_dest_1='location=/u01/arch valid_for=(all_logfiles,all_roles) db_unique_name=orcl_s'
*.log_archive_dest_2='service=orcl_p valid_for=(online_logfiles,primary_role) lgwr affirm sync db_unique_name=orcl_p'
*.log_archive_dest_state_1=enable
*.log_archive_dest_state_2=enable
*.standby_file_management='auto'
*.fal_server='orcl_p'
*.log_file_name_convert='/u01/app/oracle/oradata/orcl','/u01/app/oracle/oradata/orcl'
*.db_file_name_convert='/u01/app/oracle/oradata/orcl','/u01/app/oracle/oradata/orcl' 4、拷貝密碼檔案
scp $ORACLE_HOME/dbs/orapworcl wyuu:`pwd` 5、建立啟動需要的目錄
目錄要與pfile中路徑相同
mkdir -p $ORACLE_BASE/admin/orcl/adump 6、啟動資料庫到nomount狀態
startup nomount 四、主庫複製資料庫 rman target sys/[email protected]_p auxiliary sys/[email protected]_s duplicate target database for standby from active database nofilenamecheck dorecover; 五、開啟備庫資料庫
alter database open; 六、備庫應用日誌檔案 alter database recover managed standby database using current logfile disconnect from session;
alter database recover managed standby database cancel;（取消日誌檔案應用，不需做） 七、查詢主備庫資料庫狀態 1、主庫 SQL> select log_mode,open_mode,database_role from v$database;
LOG_MODE OPEN_MODE DATABASE_ROLE
------------ -------------------- ----------------
ARCHIVELOG READ WRITE PRIMARY 2、備庫 SQL> select log_mode,open_mode,database_role from v$database;
LOG_MODE OPEN_MODE DATABASE_ROLE
------------ -------------------- ----------------
ARCHIVELOG READ ONLY WITH APPLY PHYSICAL STANDBY 備庫是隻讀的 八、驗證資料同步
--------------------- 作者：吳用丶 來源：CSDN 原文：https://blog.csdn.net/weixin_42774383/article/details/82629349 版權宣告：本文為博主原創文章，轉載請附上博文連結！