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DGbroker的配置和使用-创新互联

十余年的夏河网站建设经验，针对设计、前端、开发、售后、文案、推广等六对一服务，响应快，48小时及时工作处理。营销型网站的优势是能够根据用户设备显示端的尺寸不同，自动调整夏河建站的显示方式，使网站能够适用不同显示终端，在浏览器中调整网站的宽度，无论在任何一种浏览器上浏览网站，都能展现优雅布局与设计，从而大程度地提升浏览体验。创新互联建站从事“夏河网站设计”,“夏河网站推广”以来，每个客户项目都认真落实执行。ong>配置方法
1、主备都在静态监听里新增DG broker的配置
主库为
(SID_DESC=
      (GLOBAL_DBNAME=PROD_DGMGRL)
      (ORACLE_HOME=/db/oracle/product/11.2.0/db_1/)
      (SID_NAME=PROD)
    )
备库为
(SID_DESC=
      (GLOBAL_DBNAME=PROD_STD_DGMGRL)
      (ORACLE_HOME=/mnt/sdb1/u01/app/oracle/product/11.2.0.4/db)
      (SID_NAME=PROD_STD)
    )
2、主备都设置参数
SQL> alter system set dg_broker_start=true;
使用方法
主备都可以执行
dgmgrl
DGMGRL> connect sys/123456
DGMGRL> connect sys/123456@tnsname
DGMGRL> help
DGMGRL> help show
Displays information about a configuration, database, or instance
Syntax:
  SHOW CONFIGURATION [VERBOSE];
  SHOW DATABASE [VERBOSE] [];
  SHOW INSTANCE [VERBOSE] []
    [ON DATABASE ];
  SHOW FAST_START FAILOVER;
DGMGRL> help create
Creates a broker configuration
Syntax:
  CREATE CONFIGURATION AS
    PRIMARY DATABASE IS
    CONNECT IDENTIFIER IS ;
DGMGRL> help add
Adds a standby database to the broker configuration
Syntax:
  ADD DATABASE
    [AS CONNECT IDENTIFIER IS ]
    [MAINTAINED AS {PHYSICAL|LOGICAL}];
DGMGRL> help switchover
Switches roles between a primary and standby database
Syntax:
  SWITCHOVER TO ;
以上database name其实为db_unique_name,connect identifier表示tnsname
DGMGRL> SHOW CONFIGURATION;
ORA-16532: Data Guard broker configuration does not exist
Configuration details cannot be determined by DGMGRL
DGMGRL> CREATE CONFIGURATION DG1 AS  PRIMARY DATABASE IS PROD2 CONNECT IDENTIFIER IS PROD2;
Configuration "dg1" created with primary database "prod2"
DGMGRL> ADD DATABASE PROD2_STD AS CONNECT IDENTIFIER IS PROD2_STD MAINTAINED AS PHYSICAL;
Database "prod2_std" added
DGMGRL> SHOW CONFIGURATION;
Configuration - dg1
  Protection Mode: MaxPerformance
  Databases:
    prod2     - Primary database
    prod2_std - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
DISABLED
DGMGRL> enable CONFIGURATION;
Enabled.
一旦enable configuration，那么主库的log_archive_dest_2就有值了
DGMGRL> show CONFIGURATION VERBOSE;
Configuration - dg1
  Protection Mode: MaxPerformance
  Databases:
    prod2     - Primary database
    prod2_std - Physical standby database
  Properties:
    FastStartFailoverThreshold      = '30'
    OperationTimeout                = '30'
    FastStartFailoverLagLimit       = '30'
    CommunicationTimeout            = '180'
    ObserverReconnect               = '0'
    FastStartFailoverAutoReinstate  = 'TRUE'
    FastStartFailoverPmyShutdown    = 'TRUE'
    BystandersFollowRoleChange      = 'ALL'
    ObserverOverride                = 'FALSE'
    ExternalDestination1            = ''
    ExternalDestination2            = ''
    PrimaryLostWriteAction          = 'CONTINUE'
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS

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