ORACLE VIRTUALIZATION

1. xVM — HISTORICAL ORIGIN (2007–2010)

Oracle used the name xVM for its early family of virtualization technologies:

• Oracle VM Server for x86 (Xen)

• Oracle VM Manager

• Oracle VM VirtualBox (VirtualBox)

• Oracle VM Server for SPARC (formerly Logical Domains)

It was a commercial brand that Oracle no longer uses.
The technology evolved, but the term xVM is no longer official.

2. ORACLE VIRTUALIZATION ON x86

✔ 2.1 Oracle VM (Xen) — Discontinued

Previously part of the xVM family.

• Based on the Xen hypervisor

• Live migration, HA, storage repositories, clustering

• Integrated with Oracle Linux

📌 EOL since 2021 (end of main support)

Oracle now recommends migrating to KVM.

✔ 2.2 Oracle Linux Virtualization Manager (OLVM) — Current and fully supported

The modern platform recommended by Oracle.

Technology:

• Based on KVM

• Based on oVirt

• Integrated with Oracle Linux (UEK & RHCK)

Features:

• High availability

• Live migration

• Storage pools

• Centralized management similar to VMware vCenter

• Integration with OCI (Oracle Cloud)

📌 This is Oracle’s official virtualization platform in 2025 for x86.

✔ 2.3 Oracle VM VirtualBox — Active, for personal/development use

Formerly part of xVM.

• Full virtualization for desktops/workstations

• Multiplatform (Windows, macOS, Linux)

• Extensions for PCI passthrough, USB, VRDP

Still very active, but not an enterprise hypervisor.

3. ORACLE VIRTUALIZATION ON SPARC

Oracle maintains SPARC architecture with the best hardware-level virtualization on the market.

✔ 3.1 Oracle VM Server for SPARC (LDoms) — Current

Previously called:

• Logical Domains (LDom)

• Sun Logical Domains

• SPARC Hypervisor

Features:

• Native virtualization built into SPARC CPUs (T & M series)

• Up to 128 domains per server

• Real CPU allocation (cores and threads)

• PCIe SR-IOV

• Live Migration

• Dom0 (control domain) + guest domains

• Hardware-level security

Widely used in banking, insurance, and government environments.

📌 Fully supported and updated in 2025

✔ 3.2 Oracle Solaris Zones (Containers) — Current

Lightweight virtualization integrated into Solaris.

Features:

• Full namespace isolation

• Near-zero overhead

• Kernel zones and branded zones

• Solaris 10 zones on Solaris 11 (critical for legacy workloads)

• Heavy use in mission-critical SPARC systems

📌 Still a key component of Solaris + SPARC

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✔ 3.3 Oracle Dynamic Domains (Hardware Partitions) — Current

Available on high-end SPARC servers (M-series).

Features:

• Physical hardware partitions

• 100% physical isolation

• Electrical and backplane redundancy

• Multiple Solaris or LDom environments can run inside each domain

A higher level of isolation than LDoms or Zones.

4. VIRTUALIZATION IN ORACLE CLOUD (OCI)

✔ 4.1 OCI Compute

• KVM-based virtual machines

• Bare-metal instances (no hypervisor)

• RDMA support

• Flexible OCPU (1–64 cores)

• Live Migration (new generation)

✔ 4.2 Exadata Cloud & Exadata Cloud@Customer

Specialized virtualization for Oracle Database workloads.

✔ 4.3 SPARC in the Cloud

OCI does not offer public SPARC instances, but Oracle supports SPARC virtualization on-premises via:

• SPARC M-series

• SPARC S-series

• T8, M8 servers

Conclusion

Oracle’s virtualization today focuses on:

✔ KVM (OLVM) for x86

✔ LDoms + Solaris Zones for SPARC

✔ OCI (Oracle Cloud) for modern workloads

✔ VirtualBox for personal and development use

The term xVM is no longer used, but its legacy continues in VirtualBox and Oracle’s current enterprise virtualization technologies.