How to setup data guard broker 11g?
Setting up Data Guard Broker in 11g involves configuring primary and standby databases, enabling Data Guard in both databases, and configuring the broker settings. Here are the steps to setup Data Guard Broker 11g:
1. **Ensure that you have already configured primary and standby databases with necessary parameters like log_archive_dest_1, log_archive_dest_state_2, and log_archive_config.**
2. **Enable force logging on the primary database:**
Run the ALTER DATABASE FORCE LOGGING command on the primary database to ensure all changes are logged.
3. **Enable archiving on both primary and standby databases:**
Set the log_archive_dest_n parameter in the initialization parameter file of both databases to enable archiving.
4. **Configure the standby database:**
Create a standby control file on the standby database and configure it to operate in standby mode.
5. **Configure the Data Guard Broker settings on both databases:**
Edit the dg_broker_start parameter in the initialization parameter file to enable the Data Guard Broker.
6. **Start the Data Guard Broker observer process:**
Run the DGMGRL command to start the observer process on both the primary and standby databases.
7. **Add the standby database to the Data Guard Broker configuration:**
Use the DGMGRL command to add the standby database to the broker configuration.
8. **Check the Data Guard Broker configuration:**
Verify the Data Guard Broker configuration using the SHOW configuration; command in DGMGRL.
9. **Start the Data Guard Broker configuration:**
Start the Data Guard configuration using the ENABLE configuration; command in DGMGRL.
10. **Monitor the Data Guard Broker configuration:**
Monitor the Data Guard Broker configuration using the DGMGRL commands like SHOW configuration; and SHOW database verbose;.
11. **Perform a failover test:**
Test failover scenarios to ensure that the Data Guard Broker configuration is working effectively.
12. **Regularly test the Data Guard Broker configuration:**
Perform switchover and failover tests regularly to validate the Data Guard Broker setup.
FAQs
Can I setup Data Guard Broker without configuring primary and standby databases?
No, Data Guard Broker requires primary and standby databases to be configured first before enabling the broker.
Do I need to enable force logging on the primary database?
Yes, force logging must be enabled on the primary database to ensure data integrity during switchover or failover.
What happens if archiving is not enabled on the databases?
Without archiving enabled on both primary and standby databases, Data Guard Broker will not be able to synchronize the redo logs.
How do I start the Data Guard Broker observer process?
You can start the observer process by running the DGMGRL command on both the primary and standby databases.
Is it necessary to add the standby database to the Data Guard Broker configuration?
Yes, you need to add the standby database to the broker configuration to monitor and manage the Data Guard setup effectively.
Can I check the Data Guard Broker configuration using SQL queries?
No, you need to use the DGMGRL commands to check the Data Guard Broker configuration.
What is the purpose of enabling the Data Guard Broker configuration?
Enabling the Data Guard Broker configuration allows the broker to manage the switchover and failover operations automatically.
How often should I monitor the Data Guard Broker configuration?
It is recommended to monitor the Data Guard Broker configuration regularly to ensure smooth operation in case of failover.
How do I perform a failover test in Data Guard Broker?
You can simulate failover scenarios using the DGMGRL command to test the effectiveness of the Data Guard Broker setup.
What are the benefits of regularly testing the Data Guard Broker configuration?
Regular testing helps in identifying any issues and ensuring the readiness of the Data Guard Broker setup for failover situations.
What are the consequences of not monitoring the Data Guard Broker configuration?
Without regular monitoring, you may not be aware of any potential issues that could affect the failover process in Data Guard Broker.