Implementing High Availability and Disaster Recovery with OCI Autonomous Database

In this blog, we will explore the advanced configurations need to implement high availability (HA) and disaster recovery (DR) for Oracle Cloud Infrastructure (OCI) Autonomous Database. We will cover setting up Data Guard, configuring cross-region replication, and performing failover and switchover operations.

Understanding High Availability and Disaster Recovery

• Overview of HA and DR concepts.
• Importance of HA and DR in cloud environments.
• Key features of OCI Autonomous Database for HA/DR.

. Setting Up Data Guard for HA

Prerequisites

• An active Oracle Cloud account.
• Autonomous Database instance created.

Step-by-Step Configuration

1. Enable Data Guard:
   • Navigate to the Autonomous Database details page.
   • Select “Data Guard” from the menu.
   • Click “Enable Data Guard” and choose the standby type (local or remote).
2. Configure Standby Database:
   • Select the standby database configuration options.
   • Review and create the standby database.

3. Configuring Cross-Region Replication

Setting Up Cross-Region Replication

1. Create a Remote Standby Database:
   • Navigate to the Autonomous Database details page.
   • Select “Data Guard” and choose “Remote Standby”.
2. Set up Network Connectivity:
   • Set up a secure network connection between regions.
   • Make sure appropriate IAM policies are in place for cross-region access.
3. Start Replication:
   • Turn on replication and check the first data synchronization.

4. Performing Failover and Switchover Operations

Failover Operations

• Navigate to the Autonomous Database details page.
• Select “Data Guard” and click “Failover”.
• Confirm the failover operation and check the process.

Switchover Operations

• Navigate to the Autonomous Database details page.
• Select “Data Guard” and click “Switchover”.
• Confirm the switchover operation and make sure of a seamless transition.

5. Monitoring and Managing HA/DR Configurations

Using OCI Console for Monitoring

• Access the Autonomous Database details page.
• Use Performance Hub and Data Guard metrics for monitoring.

Automating with OCI CLI

• Install and set up OCI CLI.
• Example command to check Data Guard status:

oci db autonomous-database get --autonomous-database-id <database_OCID>

Thank you
Osama