IBM Support

Rational Tau Fix Pack 4 ( for 4.3

Downloadable files


IBM Rational Tau has been made generally available and contains fixes to version 4.3 including all predecessor fix packs.

Download Description

Table of Contents
Sections Description

The Change history section provides an overview on what is new in this release with a description of any new functions or enhancements when applicable.

The How critical is this fix section provides information related to the impact of this release to allow you to assess how your environment may be affected.

The Prerequisites section provides important information to review prior to the installation of this release.

The Download package section provides the direct link to obtain the download package for installation in your environment.

The Installation instructions section provides the installation instructions necessary to apply this release into your environment.

The Known side effects section contains a link to the known problems (open defects) identified at the time of this release.

Supporting Documentation
Document Description

Click to review the detailed system requirements information for a complete list of hardware requirements, supported operating systems, prerequisites and optional supported software, with component-level details and operating system restrictions.

This document contains a collection of product documentation links for IBM Rational Tau.

Click to review a complete list of the defects (APARs) resolved in this release including a list of resolved defects for the entire version family.


Prerequisites include:

To run Telelogic Tau 4.3 you need to have one of the following operating systems installed on your computer:

  • Microsoft Windows XP Professional SP2 or higher
  • Microsoft Windows Vista Business/Enterprise SP1 (32/64 bit)
  • Microsoft Windows 2003 Server Standard
  • Microsoft Windows 2003 Server Enterprise
  • Sun SPARC running Solaris 10
  • Red Hat Enterprise Linux 4.0 (AS 4.0, ES 4.0, WS 4.0)
  • Red Hat Enterprise Linux 5.0 (AS 5.0, ES 5.0, WS 5.0) (32/64 bit)
  • Citrix Server Operating System: Windows 2003 Server Standard
  • Citrix Server Operating System: Windows 2003 Server Enterprise (32/64 bit)
  • Server: Citrix Metaframe Presentation Server 4.0

Microsoft Windows system requirements

Resource Minimum Minimum for General modeling Recommended for Large models or code generation
Processor Pentium 500 MHz Pentium 2 GHz (General modeling) Pentium 3 GHz (Large models or code generation)
RAM 256 MB 1024 MB 2048 MB2
Virtual Memory 512 MB  
Disk Space (Installation) 450 MB (approximately)  

Linux system requirements

Resource Minimum Minimum for General modeling Recommended for Large models or code generation
Processor Pentium 500 MHz Pentium 2 GHz Pentium 3 GHz
RAM 256 MB 1024 MB 2048 MB
Virtual Memory 512 MB  
Disk Space (Installation) 550 MB (approximately)  

Solaris system requirements

Resource Minimum Recommended
Processor Solaris 10, ULTRASPARC 10 CPU 1x450MHz Solaris 10, SPARC 280r CPU 2x900MHz
Virtual Memory 512 MB 1024 MB
Disk Space (Installation) 600 MB (approximately)  

X server (UNIX clients only)

Telelogic Tau is a Windows application that is ported to UNIX platforms using third-party software, MainWin, which is implemented using the X11 library. Telelogic Tau 4.3 has been ported using MainWin version 5.2.

Native displays

MainWin supports ‘native’ displays, provided the appropriate X server and graphics card patches are applied.

X servers on Windows

To display Telelogic Tau clients running on UNIX from a PC running Windows, Hummingbird Exceed version 8 or 9 is required.

Display settings

The following display settings are recommended:

  • 16 bit color depth or better
  • Resolution (screen area) 1024 by 768 pixels, or higher

Installation Instructions

Review the installation guide for complete details.

Download package

The following sections provide detailed information related to this release.

Click the FC link below to obtain the release from Fix Central.

How critical is this fix?

Impact Assessment
Impact Description

This is a maintenance release. It contains fixes for client-reported and internally found defects.


Regression: An error in the Maintenance Delivery Vehicle (MDV) that produces incorrect or unexpected behavior causing a supported feature to stop functioning as designed.
This includes:

  • Coding errors that cause a regression
  • Documentation or packaging problems that cause a regression
  • Errors reported in a new function delivered in a MDV that cause a regression

Incomplete: An error in the MDV has not regressed, but does not work as designed.
This includes:

  • Fixed APARs which did not solve the original problem but did not break anything new
  • APARs reporting documentation errors, such as readme errors, that cause problems applying an MDV but do not lead to a regression

  • Regression and incomplete APARs are considered fix-in-error or MDV-in-error
  • Definitions above apply only to valid APARs that result in product fixes (APARs returned as working-as-designed are not assessed for being fix-in-error)
  • Issues in major releases due to new functionality do not apply in this definition

There are no known regressions to report.

Problems solved

Defects resolved

Click the Fix List link in the table of contents above to review a list of the problems solved in this release.

Known side effects

Review the following list of known issues and open defects:

There are no known issues report.

Open defects

Review the following list of open defects for Rational Tau on the IBM Support Portal.

Review technote 1461170: Open APARs for Rational products available on the Web for information on how to configure your MyNotifications subscription account and subscribe to the APARs you are interested in following.

Change history

What's new

No new features or functions.

Click the link in the Download Options column:

Download RELEASE DATE LANGUAGE SIZE(Bytes) Download Options
What is Fix Central(FC)?
Rational Tau fixes 8 Dec 2011 English 1 FC

Technical support

Tab navigation

IBM Rational Software Support Communities

  • Visit the IBM Support Portal to configure your support portal experience and review FAQs, lists of known problems, fixes, and a wealth of important support information.

  • Visit developerWorks to access an online collection of tutorials, sample code, standards, forums and other resources provided by experts at IBM to assist software developers using Rational tools including access to the IBM RFE Community.

  • Visit the Jazz Community if you use a Rational product created using the Jazz platform to interact directly with the Jazz development team and other community members, download product trials and betas and track developement progress.

Helpful Hints For Obtaining Technical Assistance:

Before you contact IBM Rational Software Support, gather the background information that you need to describe the problem. When you describe a problem to an IBM software support specialist, be as specific as possible and include all relevant background information so that the specialist can help you solve the problem efficiently. To save time, know the answers to these questions:

  • What software versions were you running when the problem occurred?
  • Do you have logs, traces, or messages that are related to the problem?
  • Can you reproduce the problem? If so, what steps do you take to reproduce it?
  • Is there a workaround for the problem? If so, be prepared to describe the workaround.

If you have helpful information to diagnose or identify the problem on your system, you can provide this data by following the instructions to exchange information with IBM Technical Support.

Follow IBM Rational Client Support on Twitter | Facebook | YouTube | devWorks Blog

Document information

More support for: Rational Tau

Software version:

Operating system(s): Linux, Solaris, Windows

Reference #: 4031635

Modified date: 08 December 2011