Each Oracle Exadata database server contains one or more virtual machine (VM) guests running on a hypervisor. This configuration ensures a distinct separation between the Oracle-managed and customer-managed components. You can host up to eight VM clusters across all the database servers in your Oracle Exadata Database Service on Dedicated Infrastructure.
Oracle manages the hypervisors through the management network. Each hypervisor uses minimal resources: only 2 CPU cores (OCPUs) and 16 GB of RAM.
The client and backup networks connect to the VM guest through bonded network interfaces to maximize performance and availability.
Each VM guest has a complete Oracle Database installation that includes all the features of Oracle Database Enterprise Edition plus all the database enterprise management packs and all the Enterprise Edition options, such as Oracle Database In-Memory and Oracle Real Application Clusters (RAC), as well as Oracle Grid Infrastructure.
VM guests require an SSH public/private key pair for operating system security. You register a public key in each guest, and you retain the private key that enables access to the VM operating system. VM guests include standard user accounts, such as oracle, opc, grid, and root.
As a result of this configuration, you manage the VM guests and all the software they contain, including the Oracle-provided management tools, including the OCI command-line interface (CLI) to perform Exadata Cloud resource tasks and ExaCLI for monitoring and managing your Exadata storage servers.
Each X9M database server has 126 OCPUs and 1390 GB of DRAM.
Each instance of Exadata Database Service on Dedicated Infrastructure contains multiple database servers and Exadata storage servers connected through network fabric ports with active bonding. The Exadata database and storage server racks reside in an Oracle Cloud Infrastructure (OCI) region. With Exadata X9M elastic expansion, the starting configuration is similar to a quarter rack (two database and three storage servers).
Oracle manages the infrastructure through the management network, which connects the database and storage server hardware.