This image shows a hybrid disaster recovery environment where the
primary Oracle WebLogic Server hosts, database hosts, and databases are
on-premises. The secondary, stand-by, environment is on OCI.
The following are located in the on-premises data center:
- Load balancer (10.10.10.10)
- WebHost1 (10.10.10.11) and WebHost2 (10.10.10.12)
- Oracle WebLogic Server with AppHost1 (10.10.10.13) and
AppHost2 (10.10.10.14)
- NFS with a two-way connection to AppHost1 and AppHost2
- Oracle RAC with DBHost1 (10.10.10.15) and DBHost2
(10.10.10.16) and PDB1
- Customer on-premises equipment (CPE) with a FastConnect
connection to the DRG in the cloud VCN
The OCI Region has a VCN and a single Availability Domain. There is one public
subnet and 3 private subnets. The following are located in the secondary
data center:
- Public Subnet 1 (web tier): Load balancer (100.100.100.10),
WebHost1 (10.10.10.11) and WebHost2 (10.10.10.12)
- Private Subnet 2 (mid-tier): AppHost1 (100.70.10.13) and
AppHost2 (100.70.10.14)
- Private Subnet 3 (FSS-tier): OCI FSS: products1, products2,
shared config, and shared runtime
- Private Subnet 4 (db-tier): DB System (RAC) with DBHost1
(100.80.10.15) and DBHost2 (100.80.10.16) and PDB1
The following port connections link the primary and secondary data centers:
- DNS uses port 443 and https to connect the primary and
secondary environments.
- Oracle Data Guard uses Port 1521 (SQL*NET) to connect the
primary PDB1 database with the secondary PDB1.
- Port 22 and https connects the primary and secondary App
hosts.
- The secondary Load Balancer uses ports 443 (HTTPS) and 7001
(HTTP Console) on the web tier. Content flows from the Load Balancer
to the App Host in the mid-tier using ports 7001 (Admin Server),
8001 (WebLogic Cluster 1), and 9001 (WebLogic Cluster 2).
- A two-way connection uses NFS to link the mid-tier with the
FSS-tier.
- The secondary App Hosts in the mid-tier use ports 1521
(SQL*NET) and 6200 (ONS) to connect to the db-tier.
The components are described in more detail in the surrounding text.
