This image shows an on-premises Oracle Database deployment being migrated to a single-node bare metal DB System in Oracle Cloud Infrastructure.

• The on-premises data center contains an edge device for private connectivity to Oracle Cloud, an application server, and a 16-core Oracle Database Enterprise Edition installation connected to a storage device.
• The on-premises data center also contains a server on which the Oracle Zero Downtime Migration (ZDM) tool is installed.
• The Oracle Cloud region contains an application server and a BM DB System, attached to separate private subnets in a single VCN.
• Security lists are used to regulate traffic to and from the subnets.
• Route tables are used to direct traffic bound for destinations outside the VCN.
• A Dynamic Routing Gateway enables private connectivity from the on-premises data center to the private subnets, using Oracle Cloud Infrastructure FastConnect or IPSec VPN.
• A Service Gateway enables the resources in the private subnets to communicate with Oracle Cloud Infrastructure Object Storage.
• SQL*Net connectivity exists between the on-premises and cloud databases.
• The ZDM tool has SSH connectivity to the on-premises and cloud database servers.