Oracle License的计算有两种方式：按照用户数和CPU个数. 其中按CPU计算方式如下：
License Number = The Number of CPU Cores * Core Factor
其中Core Factor 可以参考官方文档 Oracle Processor Core Factor 。
如果Oracle 安装在VMWARE 上，是否也是按照这个方式计算呢？ 也就是说，在虚拟机VMWARE上Oracle的License计算是否也是按照分配CPU核数来计算的呢？ 关于虚拟机上ORACLE的License计算，ORACLE 引入了下面 Soft partitioning (软分区)和Hard partitioning (硬分区)概念(如下所示),而且明确规定 VMware是软分区，并且规定Soft partitioning is not permitted as a means to determine or limit the number of software licenses required for any given server。
也就是说在一台物理机上,假如如下所示，虚拟了一台Linux服务器做Oracle Database Server， 虚拟了另外一台Windows服务器做SQL Server服务器，物理机上有2个物理CPU，每个4 Core，平均分配给这两个服务器，此时Oracle的License计算是
License Number = 2* 4*0.5= 4 而不是 License Number = 1*4*0.5= 2.
也就是说，不管是分配两核、四核、多核给Oracle 数据库服务器，Oracle License的计算都不以分配的核数计算，而是以物理机CPU核数来计算。
这样虽然不合理，但是也没有办法。至于为什么Oracle在VMWARE上这样计算License，就不得而知了。有可能是处于商业战略考虑，也有可能是处于打击商业对手。
http://www.oracle.com/us/corporate/pricing/partitioning-070609.pdf
Oracle Partitioning
Policy
"Partitioning" occurs when the CPUs
on a server are separated into individual sections where each section acts as a
separate system. Sometimes this is called “segmenting.” There are several
hardware and software virtualization technologies available that deliver
partitioning capabilities, with varying degree of resource allocation
flexibility.
The purpose of this policy document is to define which
of these partitioning technologies is deemed to be Soft, Hard or an Oracle
Trusted Partition, and under what conditions Oracle permits them as a means to
determine or limit the number of Oracle Processor licenses required for a given
server, i.e., to license a sub-capacity of total physical cores as an exception
from the contractual Oracle Processor definition. Oracle may modify the
definitions and conditions specified in this document from time to time.
There are two
main types of partitioning available:
Soft Partitioning:
Soft partitioning segments the
operating system using OS resource managers. The operating system limits the
number of CPUs where an Oracle database is running by creating areas where CPU
resources are allocated to applications within the same operating system. This
is a flexible way of managing data processing resources since the CPU capacity
can be changed fairly easily, as additional resource is needed.
Examples of such partitioning type include: Solaris 9 Resource Containers,
AIX Workload Manager, HP Process Resource Manager, Affinity Management, Oracle
VM, and VMware
Soft
partitioning is not permitted as a means to determine or limit the number of
software
licenses required for any given server.
Hard
Partitioning:
Hard
partitioning physically segments a server, by taking a single large server and
separating it into distinct smaller systems. Each separated system acts as a
physically independent, self-contained server, typically with its own CPUs,
operating system, separate boot area, memory, input/output subsystem and network
resources.
Oracle-approved hard partitioning technologies as listed
in this section of the policy document are permitted as a means to limit the
number of software licenses required for any given server or a cluster of
servers. Oracle has deemed certain technologies, possibly modified by
configuration constraints, as hard partitioning, and no other technology or
configuration qualify. Approved hard partitioning technologies include: Dynamic
System Domains (DSD) -- enabled by Dynamic Reconfiguration (DR), Solaris Zones
(also known as Solaris Containers, capped Zones/Containers only), LPAR (adds
DLPAR with AIX 5.2), Micro-Partitions (capped partitions only), vPar, nPar,
Integrity Virtual Machine (capped partitions only), Secure Resource Partitions
(capped partitions only), Fujitsu’s PPAR.
Using IBM processors in
TurboCore mode is not permitted as a means to reduce the number of software
licenses required; all cores must be licensed.
IBM Power VM Live
Partition Mobility is not an approved hard partitioning technology. All cores on
both the source and destination servers in an environment using IBM Power VM
Live Partition Mobility must be licensed.
Oracle VM Server may be
used as hard partitioning technology only as described in the following
documents:
? Oracle VM Server for x86, only if specific cores are
allocated per the following document:
? http://www.oracle.com/technetwork/server-storage/vm/ovm-hardpart-168217.pdf
? Oracle VM Server for SPARC, only if
specific cores are allocated per the following document:
? http://www.oracle.com/technetwork/server-storage/vm/ovm-sparc-hard-partitioning- 1403135.pdf
Oracle Trusted Partitions for Oracle
Engineered Systems
For approved Oracle Engineered Systems, (see table
below), Oracle permits the use of Oracle VM Server (OVM) as a means to limit the
number of Oracle Processor licenses required, i.e., to license a sub-capacity of
total physical cores. Oracle’s Trusted Partitions policy also requires use of
Oracle Enterprise Manager as described below – if both of these conditions are
met, the partition is deemed a ‘Trusted Partition.’
关于VMWARE上ORACLE License的计算，
VMWARE的官方文档http://www.vmware.com/files/pdf/techpaper/vmw-understanding-oracle-certification-supportlicensing-environments.pdf 也做了介绍。如下所示：
