The Oracle VM Utilities include a messaging tool, which allows sending key-value pairs to a virtual machine, or guest, and retrieve such messages from the guest. The vmmessage utility requires the Oracle VM Guest Additions to be installed on the guest side. The current edition of Oracle VM Guest Addition includes message channel and guest IP information. The Oracle VM Guest Additions allow direct integration between guest software and the virtualization layer, to assist in orchestration and automation of complex, multi-VM deployments.

A brief description of the installation, configuration and features of Oracle VM Guest Additions can be found in Chapter 3, Using the Oracle VM Guest Additions