Posted by Sundaravel Ramasubbu

Introduction :

In this session we will see How to set up Data Guard Broker.

NOTE:

Environment in my case

Prerequisite

Check DG_BROKER_START parameter on Primary and Standby

Set DG_BROKER_START to true on Primary and Standby

Update listener.ora on Primary and Standby

On Primary

Note: If db_domain parameter is not null, GLOBAL_DBNAME should be like db_unique_name_DGMGRL.db_domain

On Standby

Note: If db_domain parameter is not null, GLOBAL_DBNAME should be like db_unique_name_DGMGRL.db_domain

Sample TNSNAMES.ora

Primary and Standby

Create the data guard broker configuration

Enable configuration

This step is needed if you want to set Archival removal policy Standby Database.

Database switchover

  1. Make sure redo shipping is happening and redo is getting applied into the standby.
  2. In the DGMGRL console, input “show configuration”, make sure there is no error reported and configuration status should be SUCCESS.
  3. Verify no error is reported in alert log.
  4. Make sure DG listener is up and running on primary and standby.

On Primary DB Node

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