PQ86603: IBM HTTP Server V2.0.x mod_alias/mod_rewrite conflict with V5.0 plug-in
 Downloadable files
 
Abstract
WebSphere® Application Server V5.0 plug-in shipped with V5.0.2.5 conflicts with IBM® HTTP Server V2.0.x. This plug-in replacement is compatible with IBM HTTP Server V2.0.x.
 
Download Description
WebSphere Application Server component plug-in fix is a native code module that runs as a plug-in in the web server. It can be independently installed on a Web server in a WebSphere Application Server configuration. Review Web server plug-in policy for more details.

Web server plug-in policy for WebSphere Application Server
http://www.ibm.com/support/docview.wss?&context=SSEQTP&uid=swg21160581

Additional defects since 5.0.2.5 included in this component plug-in fix
PQ84887 - Plug-in did not do failover correctly
PQ86467 - iPlanet plug-in failed to parse and set headers
PQ86603 - Plug-in conflict with IBM HTTP Server 2.0.x MOD_ALIAS and MOD_REWRITE modules

The README file that is shipped with this component plug-in fix includes additional details about these fixes and other important information.

Superseded fixes
WebSphere Application Server Service Pack 5.0.2.5 plug-in
WebSphere Application Server Service Pack 5.0.2.4 plug-in
WebSphere Application Server Service Pack 5.0.2.3 plug-in
WebSphere Application Server Service Pack 5.0.2.2 plug-in
WebSphere Application Server Service Pack 5.0.2.1 plug-in
Cumulative plug-in fix WAS_Plugin_11-19-2003_5.0.X_cumulative_Fix
Cumulative plug-in fix WAS_Plugin_09-03-2003_5.0.X_cumulative_Fix
Cumulative plug-in fix WAS_Plugin_07-14-2003_5.0.X_cumulative_Fix
Cumulative plug-in fix WAS_Plugin_07-01-2003_5.0.X_cumulative_Fix
Cumulative plug-in fix WAS_Plugin_06-23-2003_5.0.X_cumulative_Fix
Cumulative plug-in fix WAS_Plugin_04-23-2003_5.0.X_cumulative_Fix

All plug-in defects reported by April 12, 2004 are included in this fix. F

RECOMMENDED fixes for the Application Server side of a WebSphere Application Server configuration


Apply this plug-in fix if you experience any problems with WebSphere Application Server V5.0 plug-in before contacting IBM Software Support. This interim fix applies to the Web server side of a WebSphere Application Server configuration.

Notice for WebSphere Portal Server V4.x users
All WebSphere Portal Server V4.x configurations that include the WebSphere Application Server V5.0 plug-in should apply the WebSphere Application Server V5.0 component plug-in fix, or any later V5.0 plug-in included in a WebSphere Application Server V5.0 fix pack or cumulative fix that supersedes cumulative component plug-in fix.

Do not apply WebSphere Application Server 4.0 cumulative component plug-in fix to WebSphere Portal Server V4.x configurations. WebSphere Portal Server 4.x users must apply the WebSphere Application Server V5.0 component plug-in fix manually by following instructions that are listed at the end of this document.

Performance tuning considerations
Consider increasing several default HTTP transport parameters of WebSphere Application Server Web container to prevent premature I/O & KeepAlive timeout of http requests, especially when the Web server is remote and connection between the client and Web Server are slow, such as when the client is using a modem connection or the HTTP requests use POST:

  • Increased number of InterruptedException (Read timed out) exceptions may be observed in the Application Server logs after PQ70037 is installed, which is included also in this cumulative plug-in fix.
  • Each system is unique and has different optimum parameter settings. These are reasonable values for Web container settings to start with:

    ConnectionKeepAliveTimeout = 10 - 60 (default is 5)

    ConnectionIOTimeout = 10 - 60 (default is 5)

    In WebSphere Application Server 5.0.1, ConnectionKeepAliveTimeout & ConnectionIOTimeout settings are in milliseconds. In WebSphere Application Server 5.0, 5.0.2 & later, ConnectionKeepAliveTimeout & ConnectionIOTimeout settings are in seconds.
  • General recommendation is to set ConnectionIOTimeout and ConnectionKeepAliveTimeout to the same or lower values as their corresponding parameters in Web server, such as Timeout and KeepAliveTimeout in IBM HTTP Server or Apache. Results of performance tests should show optimum parameters for HTTP transport of the Servlet Engine.
  • More information how to set these parameters can be found on WebSphere Application Server Information Center:
    http://www.ibm.com/software/webservers/appserv/infocenter.html


Useful technotes
 
Prerequisites
You must download the latest version of the UpdateInstaller tool to apply this fix. The install tool, UpdateInstaller, is separate from this fix.
 
URL LANGUAGE SIZE(Bytes)
UpdateInstaller US English 6787836
 
 
Installation Instructions
This interim fix applies to the Web server side of a WebSphere Application Server configuration.

You must stop your Web server completely before you apply this plug-in fix.

Common problems installing this fix:
http://www.ibm.com/support/docview.wss?&context=SSEQTP&uid=swg21137927

Recommendations when you run UpdateInstaller

  • Use the latest WebSphere UpdateInstaller
  • Use WebSphere JDK when you run UpdateInstaller to install this fix (for example run setupCmdLine.sh script)
  • Run updateWizard/updateSilent script from the Updateinstaller root folder as a root/Administrator


Here is the example of a silent installation of this component plug-in fix on Windows:
updateSilent -fix -install -fixdir C:\temp\WebSphere\fix -installdir C:\WebSphere50\AppServer -fixes WAS_Plugin_04-12-2004_5.0.X_cumulative

Also,

  • The WebSphere Application Server plug-in module is installed on the supported Web server that meets minimum software prerequisites, including minimum hardware and software prerequisites.
  • The minimum Global Security Kit (GSKIT) level that is required by the WebSphere Application Server plug-in for SSL communication with WebSphere Application Server, installed on a Web server.
  • The WebSphere Application Server V5.0 plug-in component can be installed and maintained independently of fix packs or cumulative fixes.
  • Installing the latest plug-in modules can eliminate an existing problem with very low risk of impacting the Application Server processes.
  • This component specific fix supersedes any plug-in fixes previously installed, through WebSphere Application Server V5.0.2.5. Future fix packs and cumulative fixes will supersede this fix.


Manual installation
You can install this component plug-in fix manually in a case that you experience any problems to install it interactively or silently by using UpdateInstaller tool.

Please refer to the readme for detailed installation instructions
 
URL LANGUAGE SIZE(Bytes)
Readme US English 9182
 
Download package
What is DD?
Download RELEASE DATE LANGUAGE SIZE(Bytes) Download Options
Plugin cumulative fix (AIX) 4/13/2004 US English 798537 DD
Plugin cumulative fix (HPUX) 4/13/2004 US English 1330456 DD
Plugin cumulative fix (Linux_i386) 4/13/2004 US English 453341 DD
Plugin cumulative fix (Linux_ppc32) 4/13/2004 US English 467000 DD
Plugin cumulative fix (Linux_s390) 4/13/2004 US English 484757 DD
Plugin cumulative fix (Sun) 4/13/2004 US English 1119669 DD
Plugin cumulative fix (Windows) 4/13/2004 US English 709372 DD
 
Technical support
1-800-IBM-SERV (U.S. calls Only)
 
Cross Reference information
Segment Product Component Platform Version Edition
Application Servers Runtimes for Java Technology Java SDK
Problems (APARS) fixed
PQ67072, PQ67481, PQ68139, PQ68477, PQ70037, PQ70205, PQ70292, PQ70620, PQ71167, PQ71223, PQ72049, PQ72257, PQ72428, PQ72703, PQ73005, PQ73258, PQ74403, PQ74450, PQ74545, PQ74834, PQ75501, PQ75521, PQ75947, PQ75991, PQ75988, PQ76174, PQ75936, PQ76729, PQ76727, PQ77059, PQ75805, PQ76483, PQ76548, PQ77105, PQ77058, PQ77300, PQ77923, PQ78284, PQ78285, PQ78361, PQ78585, PQ78702, PQ78948, PQ79090, PQ79730, PQ80913, PQ80924, PQ81851, PQ81125, PQ81346, PQ81792, PQ81793, PQ81797, PQ81909, PQ82330, PQ82361, PQ82740, PQ82756, PQ82865, PQ82880, PQ83264, PQ83334, PQ82742, PQ84485, PQ84539, PQ84704, PQ84704.1, PQ84887, PQ84932, PQ84950, PQ86174, PQ86442, PQ86467, PQ86603
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > Plug-in
Operating system(s): Windows
Software version: 5.0.2.5
Software edition:
Reference #: 4004524
IBM Group: Software Group
Modified date: Aug 17, 2004