The instructions are posted at OTN:http://www.oracle.com/technetwork/server-storage/vm/downloads/index.html
Notable bugs fixed in Oracle VM Server 3.2.2-520 and Oracle VM Manager 3.2.2-520 are:
To review the list of bug fixes, please review the announcement
email archive at https://oss.oracle.com/pipermail/oraclevm-errata/.
To receive notification on the software update delivered to Oracle
Unbreakable Linux Network (ULN, http://linux.oracle.com)
for Oracle VM, you can sign up here http://oss.oracle.com/mailman/listinfo/oraclevm-errata.
To learn the new features and enhancements delivered in Oracle VM
releases, please review the What's New section of Oracle
VM Release Notes: http://docs.oracle.com/cd/E35328_01/E35329/html/vmrns-new.html
It's highly recommended to update Oracle VM Server 3.2 with the
latest patch update. Please review the Oracle VM User's Guide http://docs.oracle.com/cd/E35328_01/E35332/html/vmusg-servers-manage.html#vmusg-servers-yum
for specific instructions on how to use a Yum repository to
perform the Oracle VM Server update.
To receive notification on the software update delivered to
Oracle Unbreakable Linux Network (ULN, http://linux.oracle.com) for Oracle VM, you
can sign up here http://oss.oracle.com/mailman/listinfo/oraclevm-errata.
Get the download instructions at Oracle Technology Network
(OTN), and apply latest Oracle VM Manager patch. Be sure to
review the patch README before you apply the patches.
Please refer to the Oracle VM Installation and Upgrade Guide http://docs.oracle.com/cd/E35328_01/E35330/html/index.html
Oracle VM documentation is available on the Oracle Technology
Please refer to the Oracle VM Release Notes http://docs.oracle.com/cd/E35328_01/E35329/html/index.html
for a list of features and known issues.
For the latest information, best practices white papers and
webinars, please visit http://oracle.com/virtualization.