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zSoftCap (Replaces SoftCap) - Software Migration Capacity Planning Aid for IBM System z

Document Author:
Additional Author(s):

James Shaw
Valerie Spencer

Document ID:


Doc. Organization:

Advanced Technical Sales

Document Revised:


Product(s) covered:

CICS Transaction Server; IMS; zEnterprise; zEnterprise 196; zSeries; z/OS; z/VSE

Abstract: zSoftCap is a PC-based productivity tool designed to assess the effect on capacity for IBM System z processors, when migrating to more current releases of the operating system or major subsystems. zSoftCap assumes that hardware remains constant while software releases change

Product Name:
Product Version:
Version 4.2a
Operating System:
Windows XP/Win7
Change Date:
Approximate Size:
Click on icon to down load package with JavazSoftcapInstallWithJava.exezSoftcapInstallWithJava.exe
Click ICON to download package without Java
Click on the icon to view the User Guide
If you require SoftCap to do a 31-bit to 64-bit migration or WLM migrations. SoftCap is now functionally stable and no new updates will be included..
Please send a note to

Hide details for What's newWhat's new

V4.2a (10/28/2011)
  • Added support for IMS v12
  • Corrected a problem with CICS and IMS, when a specific software version was specified for the current environment without specifically specifying the future version. When the utilization for the respective subsystem was modified, capacity results were presented as though a different future version had been specified. For such cases, the application subsystem should have been viewed as not being upgraded. If the current version had been left defined as Unspecified, results were correct.

Hide details for Important notice concerning Java RuntimeImportant notice concerning Java Runtime
Effective 03/11/2009, a new IBM Java2, v6 runtime environment will be required to support the CPS Java-based tools listed below. New versions of these tools are being provided simultaneously, as follows:
1. zPCR C5.3a
2. SoftCap C3.4a

Both of these tools require the new IBM Java v6 runtime environment (referred to as CPSJava). Note that:
  • These CPS tool versions will only function with Java v6
  • Previous CPS tool versions will not function with Java v6
  • Only one version of CPSJava can be supported. Java v6 will now be
that version.

Hide details for Installation of zSoftCap on Windows XP/Win 7Installation of zSoftCap on Windows XP/Win 7
The zSoftCap installation package is available on this Web site as:

zSoftcapInstallwithJava.exe : zSoftCap tool including the required IBM Java runtime (~80MB)

When the install package is executed:
If the required IBM Java runtime is not installed, the Java supporting both of the tools will be installed.
If the required IBM Java runtime is already installed and current, the Java install will be skipped.
If the required IBM Java runtime is already installed by zSoftCap, but out-of-date, that version will be uninstalled
and the new Java supporting both of the tools will be installed.
Finally, zSoftCap itself will be installed.

Hide details for zSoftcap AbstractzSoftcap Abstract

zSoftCap is a PC-based productivity tool under Windows, designed to assess the effect on IBM System z processor capacity, when planning to upgrade to a more current operating system version and/or major subsystems versions. zSoftCap assumes that the hardware configuration remains constant while the software version or release changes. The capacity implication of an upgrade for the software components can be assessed independently or in any combination.
z/OS Environments Supported
z/OS: z/OS V1R6 through z/OS V1R13
CICS: CICS/TS-1.1 through CICS/TS 4.2
IMS: IMS V4 through IMS V11

Input required by zSoftCap includes the current z/OS version/release and the utilization represented by each of the following components: Batch, CICS, DB2, IMS, Web, and System. The planned future z/OS version/release must also be specified. The processor family, the N-way of the image, and the use of HiperDispatch (supported on z10 and later) are all considered.
For CICS and IMS software upgrades (optional), both the current and planned version/release, and a high-level description of the subsystem's implementation is required.
z/VSE Environments Supported
z/VSE: VSE/ESA-2.3 through z/VSE-4.3

Information Provided
Results show the effective change in processor utilization and the net benefit or cost in capacity that can be expected when moving to newer software versions. For z/OS environments, if upgrading multiple components, a report is available showing the effect of each as well as their combined effect on capacity.

IBM Customers can obtain zSoftCap via the Internet at:

For questions concerning zSoftCap, contact Capacity Planning Support via E-mail:

Note: The IBM JavaTM Runtime Environment provided herewith shall only be used with the zSoftCap tool.

Note that the zSoftCap User's Guide is now available.


The performance data contained in this tool was derived by IBM in a controlled environment. A customer's actual performance results may vary significantly. Accordingly, IBM provides no representations or assurances that a customer will obtain the same or similar results. Users of this tool should verify the applicability of the data for their specific environment.

To use this, you will need the Adobe Acrobat Reader version that supports your operating platform. The latest versions of these readers are publicly available without charge from the Adobe Web site, found at ; click on "Get Acrobat Reader".




Planning and Design


IBM System z Family

S/W Pillar(s):

IBM System z Software




executable file, zosmigr

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