This image shows a highly available, multi-region deployment that integrates components across AWS and Oracle Cloud Infrastructure (OCI).

There are two environments depicted: the Primary AWS Region associated with a Primary OCI Region, and a Standby AWS Region associated with a Standby OCI Region. Each environment deployed across AWS and OCI has equivalent components and configurations.

In each AWS region:

• There is an Application deployed in an Application Virtual Private Cloud (VPC) in AWS. The Application VPC is connected to an ODB network using ODB Peering.
• Within the each ODB network, the Oracle Database@AWS deployment resides in its own Virtual Cloud Network (VCN). Within each VCN are client and backup subnets.
  • In the Primary AWS Region, the Oracle Database@AWS VCN is named VCN1 with a Client Subnet (10.10.1.0/24) and a Backup Subnet (10.10.0.0/24). Each subnet has its own route table and security list. The primary Oracle Database is deployed across these two subnets.
  • The Standby AWS Region mirrors the primary region: the Oracle Database@AWS VCN is named VCN2 with a Client Subnet (10.20.1.0/24) and a Backup Subnet (10.20.0.0/24), each with its own route table and security list. The standby Oracle Database is deployed across these subnets.
• Each AWS region's Oracle VCN client subnet is connected to the Hub VCN within its paired OCI region using a local peering connection between Local Peering Gateways (LPGs).

In each OCI region:

• There is a Hub VCN: Hub VCN1 in the Primary OCI Region (10.11.0.0/16), and Hub VCN2 in the Standby OCI Region (10.22.0.0/16).
• Each Hub VCN has a Local Peering Gateway (LPG) connected to the AWS region's client subnet, and a Dynamic Routing Gateway (DRG) used for remote peering with the other OCI region. Each LPG and DRG is associated with its own route table.
• In the Primary environment, Hub LPG1 and DRG1 are used.
• In the Standby environment, Hub LPG2 and DRG2 are used.
• Hub VCNs in different OCI regions are connected over their DRGs using remote peering.

Interconnections and Oracle Data Guard Functionality:

• Applications in AWS regions use ODB Peering to reach the Oracle Database@AWS.
• The databases are connected to their respective OCI Hub VCNs through local peering.
• Oracle Data Guard enables replication between the Primary and Standby OCI Regions, ensuring the Primary Database and Standby Database are synchronized for failover and data protection purposes.