2.1.1 Exadata VM Live Migration

Exadata VM Live Migration enables online migration of a running Oracle Linux KVM guest to another KVM host. The guest remains available throughout the operation, and processing is uninterrupted, apart from a few seconds during the switchover to the new KVM host. Throughout the operation, Exadata VM Live Migration preserves active RDMA connections so database workloads can continue using the high-performance RDMA path.

Using Exadata VM Live Migration, system administrators can:

• Seamlessly move guests to balance resource usage across the available KVM hosts.

  For example, a guest on a fully utilized KVM host could be moved to a different KVM host to accommodate a requirement for additional CPU resources.

• Move running guests off a KVM host to facilitate maintenance operations requiring a server outage or reboot.

  Customers with sufficient system resources can use Exadata VM Live Migration to perform scheduled maintenance on a KVM host without interrupting running guests. They can migrate the guests off the host, perform the required maintenance while the host is idle, and then migrate the guests back to the updated host.

Key system requirements:

• Oracle Exadata X10M or later system hardware.

• Oracle Exadata System Software release 26.1.0.

• The guest being migrated must use Exascale volumes to store the guest image files.

• The system must be configured with Exadata Secure RDMA Fabric Isolation (Secure Fabric) enabled.

For further details and requirements, see Moving a Guest Using Exadata VM Live Migration.