19c 探索高可用系列(二) - RAC+DataGuard Broker

wuweilong發表於2020-03-21

19c 探索高可用系列(二) - RAC+DataGuard Broker


前言:


         在備庫需要清理昨天的環境:

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


一、主備庫啟用Broker特性

主:

SQL> alter system set dg_broker_start=true;
System altered.
備:
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、登入Broker命令列DGMGRL

dgmgrl sys/oracle@woo


三、建立Primary庫

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


三、建立standby備庫

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


四、啟用配置

DGMGRL> ENABLE CONFIGURATION;
Enabled.


五、檢視配置

DGMGRL> show configuration;
Configuration - dg_config
  Protection Mode: MaxPerformance
  Members:
  woo - Primary database
Fast-Start Failover:  Disabled
Configuration Status:
SUCCESS   (status updated 0 seconds ago)


六、檢視主庫資訊

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


七、檢視備庫資訊

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)


八、故障診斷

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


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