Oracle11g 配置DG broker

在配置DG broker之前需要確保Dataguard配置正常且主庫和備庫均使用spfile.

1. 主庫配置

• 配置DG_BROKER_START參數

  
  
  
          

   
   
   
           
檢查主庫dg_broker_start設置
  
  
  
          
SQL> show parameter dg_broker_start;

NAME                                 TYPE        VALUE 

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

dg_broker_start                      boolean     FALSE


   
   
   
           
 
            
啟用dg_broker_start，啟用后oracle會自動啟動一個dmon進程
 
           
SQL> alter system set dg_broker_start = true;

System altered.

• 在監聽文件中加入DGMGRL靜態監聽

  
  
  
          

   
   
   
           
修改listener.ora文件，加入DGMGRL靜態監聽:
  
  
  
          
SID_LIST_LISTENER = 
  (SID_LIST = 
    (SID_DESC = 
      (GLOBAL_DBNAME = ora11db) 
      (ORACLE_HOME = /app/oracle/product/11.2.0/dbhome_1) 
      (SID_NAME = ora11db) 
    ) 
    (SID_DESC = 
      (GLOBAL_DBNAME = ora11db_DGMGRL) 
      (ORACLE_HOME = /app/oracle/product/11.2.0/dbhome_1) 
      (SID_NAME = ora11db) 
    ) 
  )



   
   
   
           
 
            
重啟監聽
 
           
$> lsnrctl reload

2. 備庫配置

• 配置DG_BROKER_START參數

  
  
  
          

   
   
   
           
檢查主庫dg_broker_start設置
  
  
  
          
SQL> show parameter dg_broker_start;

NAME                                    TYPE        VALUE 
------------------------------------ ----------- ------------------------------ 
dg_broker_start                      boolean     FALSE


   
   
   
           
 
            
啟用dg_broker_start，啟用后oracle會自動啟動一個dmon進程
 
           
SQL> alter system set dg_broker_start = true;

System altered.

• 在監聽文件中加入DGMGRL靜態監聽

  
  
  
          

   
   
   
           
修改listener.ora文件，加入DGMGRL靜態監聽: 
  
  
  
          
SID_LIST_LISTENER = 
  (SID_LIST = 
    (SID_DESC = 
      (GLOBAL_DBNAME = ora11sty) 
      (ORACLE_HOME = /app/oracle/product/11.2.0/dbhome_1) 
      (SID_NAME = ora11sty) 
    ) 
    (SID_DESC = 
      (GLOBAL_DBNAME = ora11sty_DGMGRL) 
      (ORACLE_HOME = /app/oracle/product/11.2.0/dbhome_1) 
      (SID_NAME = ora11sty) 
    ) 
  )


   
   
   
           
 
            
重啟監聽：
 
           
$> lsnrctl reload

 

3.配置broker

• 創建dg broker

  
  
  
          

   
   
   
           
啟動dgmgrl命令行
  
  
  
          
oracle@solora11g:~ $> dgmgrl sys/manager
DGMGRL for Solaris: Version 11.2.0.1.0 - 64bit Production

Copyright (c) 2000, 2009, Oracle. All rights reserved.

Welcome to DGMGRL, type "help" for information.
Connected.


   
   
   
           
 
            
創建dg broker配置
 
           
DGMGRL> create configuration 'DGORA11G' as primary database is 'ora11db' connect identifier is ora11db;
Configuration "DGORA11G" created with primary database "ora11db"


   
   
   
           
 
            
顯示配置信息
 
           
DGMGRL> show configuration

Configuration - DGORA11G

  Protection Mode: MaxPerformance
  Databases:
    ora11db - Primary database

Fast-Start Failover: DISABLED

Configuration Status:
DISABLED

• 增加備庫設置

  
  
  
          

   
   
   
           
增加備庫
  
  
  
          
DGMGRL> add database 'ora11sty' as connect identifier is 'ora11sty' maintained as physical;
Database "ora11sty" added
 
   
   
   
           
 
            
顯示配置
 
           
DGMGRL> show configuration

Configuration - DGORA11G

  Protection Mode: MaxPerformance
  Databases:
    ora11db  - Primary database
    ora11sty - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
DISABLED

• enable配置

  
  
  
          

   
   
   
           
啟用配置
  
  
  
          
DGMGRL> enable configuration
Enabled.
 
   
   
   
           
 
            
顯示配置
 
           
DGMGRL> show configuration

Configuration - DGORA11G

  Protection Mode: MaxPerformance
  Databases:
    ora11db  - Primary database
    ora11sty - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS

4. 測試switchover

DGMGRL> switchover to ora11sty
Performing switchover NOW, please wait...
New primary database "ora11sty" is opening...
Operation requires shutdown of instance "ora11db" on database "ora11db"
Shutting down instance "ora11db"...
ORA-01109: database not open

Database dismounted.
ORACLE instance shut down.
Operation requires startup of instance "ora11db" on database "ora11db"
Starting instance "ora11db"...
ORACLE instance started.
Database mounted.
Switchover succeeded, new primary is "ora11sty"