19c 探索高可用系列(二) - RAC+DataGuard Broker

19c 探索高可用系列(二) - RAC+DataGuard Broker

 

前言：

     ​    ​在备库需要清理昨天的环境：

SQL> alter system set log_archive_dest_2='';
System altered.

 

一、主备库启用Broker特性

主：

SQL> alter system set dg_broker_start=true;
System altered.

备：

SQL> alter system set dg_broker_start=true;
System altered.

SQL> show parameter dg
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
adg_account_info_tracking            string      LOCAL
adg_redirect_dml                     boolean     FALSE
cell_offloadgroup_name               string
dg_broker_config_file1               string      /u01/app/oracle/product/19.3.0
                                                 /dbhome_1/dbs/dr1woo.dat
dg_broker_config_file2               string      /u01/app/oracle/product/19.3.0
                                                 /dbhome_1/dbs/dr2woo.dat
dg_broker_start                      boolean     TRUE
inmemory_adg_enabled                 boolean     TRUE                                               /dbhome_1/dbs/dr1woo.datdg_broker_config_file2               string      /u01/app/oracle/product/19.3.0                                                 /dbhome_1/dbs/dr2woo.datdg_broker_start                      boolean     TRUEinmemory_adg_enabled                 boolean     TRUE

 

二、登录Broker命令行DGMGRL

dgmgrl sys/oracle@woo

 

三、创建Primary库

DGMGRL> CREATE CONFIGURATION dg_config AS PRIMARY DATABASE IS woo CONNECT IDENTIFIER IS woo;
Configuration "dg_config" created with primary database "woo"

 

三、创建standby备库

DGMGRL> ADD DATABASE woosty AS CONNECT IDENTIFIER IS woosty MAINTAINED AS PHYSICAL;
Database "woosty" added

 

四、启用配置

DGMGRL> ENABLE CONFIGURATION;
Enabled.

 

五、查看配置

DGMGRL>  show configuration;

Configuration - dg_config

  Protection Mode: MaxPerformance
  Members:
  woo    - Primary database
    woosty - Physical standby database 

Fast-Start Failover:  Disabled

Configuration Status:
SUCCESS   (status updated 45 seconds ago)

 

六、查看主库信息

DGMGRL> SHOW DATABASE woo;
Database - woo
  Role:               PRIMARY
  Intended State:     TRANSPORT-ON
  Instance(s):
    woo1
    woo2
Database Status:
SUCCESS

 

七、查看备库信息

DGMGRL> SHOW DATABASE woo;
Database - woo
  Role:               PRIMARY
  Intended State:     TRANSPORT-ON
  Instance(s):
    woo1
    woo2
Database Status:
SUCCESS

 

八、故障诊断

DGMGRL> show database woo statusreport;
STATUS REPORT
       INSTANCE_NAME   SEVERITY ERROR_TEXT
DGMGRL> show database woosty statusreport;
STATUS REPORT
       INSTANCE_NAME   SEVERITY ERROR_TEXT