Description of the illustration architecture-multiple-domains.png

The illustration depicts a typical multiple domain Oracle Cloud Infrastructure deployment, connected to a customer data center and containing two data availability domains and one Oracle Cloud Infrastructure instance.

At the top of the image an icon represents the Customer Datacenter. Below is a large box labeled Oracle Cloud Infrastructure (Region). The Customer Datacenter is connected to a Dynamic Routing Gateway (DRG) within the region by two arrows, labeled VPN and FastConnect. The DRG is on the border of a dotted-line box within the Oracle Cloud Infrastructure region, labeled Virtual Cloud Network (10.0.0.0/16). Adjacent to the gateway is a cloud icon, also on the border of the dotted-line box, labeled Internet Gateway.

Within the VCN are two large blue boxes, labeled Availability Domain 2 (on the left) and Availability Domain 1 (on the right). Four solid lines, each labeled Security List, cut across the diagram within the VCN, and extend out to the side of the diagram, beyond the border of the Oracle Cloud Infrastructure region. The first Security List line separates the DRG from the Availability Domains.

Within the Availability Domains are three boxes representing subnets: first, Public Subnet A on top, then a second Security List line, then Private Subnet B, then the third Security List line, and finally Private Subnet C, followed by the fourth Security List line.

Within the Public Subnet A are three components: a Bastion Host component inside the Availability Domain 2, containing an icon representing Fault Domain (FD) 1; a Load Balancer component inside the Availability Domain 2; and a Web Servers component spanning both Availability Domains, containing two icons in Availability Domain 2 labeled Fault Domain 2 and Fault Domain 3, and two icons in Availability Domain 2 labeled Fault Domain 1 and Fault Domain 2. Additionally, Availability Domain 1 contains a greyed-out Load Balancer component. The Load Balancer in Availability Domain 2 is connected to the Web Servers component by a double-ended arrow, while the greyed-out Load Balancer in Availability Domain 1 is not connected.

Within Private Subnet B are two components: an Admin Server component within Availability Domain 2, containing an icon labeled Fault Domain 1; and a WebLogic Servers - Cluster 1 (Managed Servers) component spanning both Availability Domains, containing two icons labeled Fault Domain 1 and Fault Domain 2 inside the Availability Domain 2, and two more icons labeled Fault Domain 1 and Fault Domain 2 inside Availability Domain 1. The Web Servers component from the Public Subnet A is connected across the Security List line to the WebLogic Servers - Cluster 1 component of Private Subnet B.

Within Private Subnet C, each of the two Availability Domains has is a single icon labeled Managed Database System. Private Subnet C is connected across the Security List line to the WebLogic Servers - Cluster 1 component of Private Subnet B by a double-ended arrow. The two Managed Database System components are connected by an arrow labeled Dataguard Sync, going from the Availability Domain 1 Managed Database System to the Availability Domain 2 Managed Database System.

Below the fourth Security List line is an icon on the bottom border of the VCN, labeled Service Gateway.

Below the Service Gateway, and outside the VCN, is a box labeled Oracle Cloud Infrastructure Service. Within the box are five icons labeled ID and Access Management, Object Storage, Auditing, Telemetry Alerting, and Healthcheck. A three-way arrow labeled RMAN Backup connects the two Managed Database Systems, through the Service Gateway and the Security List line, to the Object Storage component of the Oracle Cloud Infrastructure Service.