PK14635: REQUESTS ARE SOMETIMES ROUTED TO THE INCORRECT SERVER

 Fixes are available

5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for AIX
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for HP-UX
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for Linux
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for AIX
6.0.2.25: WebSphere Application Server V6.0.2 Fix Pack 25 for AIX platforms
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for AIX
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for HP-UX
6.0.2.27: WebSphere Application Server V6.0.2 Fix Pack 27 for HP-UX platforms
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for Solaris
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for Windows
6.0.2.27: WebSphere Application Server V6.0.2 Fix Pack 27 for OS/400 platform
6.0.2.27: WebSphere Application Server V6.0.2 Fix Pack 27 for Solaris
6.0.2.27: WebSphere Application Server V6.0.2 Fix Pack 27 for Windows platforms
6.0.2.27: WebSphere Application Server V6.0.2 Fix Pack 27 for AIX platforms
6.0.2.25: WebSphere Application Server V6.0.2 Fix Pack 25 for HP-UX platforms
6.0.2.23: WebSphere Application Server V6.0.2 Fix Pack 23 for HP-UX platforms
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for Linux
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for Linux
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for Solaris
5.1.1.17: WebSphere Application Server V5.1.1 Cumulative Fix 17 for Windows
6.0.2.23: WebSphere Application Server V6.0.2 Fix Pack 23 for AIX platforms
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for Solaris
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for Windows
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for Windows
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for AIX
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for AIX
6.0.2.29: WebSphere Application Server V6.0.2 Fix Pack 29 for AIX platforms
6.0.2.29: WebSphere Application Server V6.0.2 Fix Pack 29 for HP-UX platforms
6.0.2.29: WebSphere Application Server V6.0.2 Fix Pack 29 for Linux platforms
V6.0.2: Java SDK 1.4.2 SR11 Cumulative Fix for IBM WebSphere Application Server
6.0.2.29: WebSphere Application Server V6.0.2 Fix Pack 29 for Solaris
6.0.2.29: WebSphere Application Server V6.0.2 Fix Pack 29 for Windows platforms
6.0.2.27: WebSphere Application Server V6.0.2 Fix Pack 27 for Linux platforms
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for Windows
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for Solaris
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for AIX
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for Windows
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for HP-UX
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for AIX
6.0.2.7: WebSphere Application Server V6.0.2 Fix Pack 7 for Solaris platforms
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for AIX
5.0.2.17: WebSphere Application Server 5.0.2 Cumulative Fix 17 for Linux
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for HP-UX
6.0.2.9: WebSphere Application Server V6.0.2 Fix Pack 9 for Windows platforms
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for Linux
6.0.2.7: WebSphere Application Server V6.0.2 Fix Pack 7 for AIX platforms
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for HP-UX
5.1.1.9: WebSphere Application Server V5.1.1 Cumulative Fix 9 for Linux
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for HP-UX
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for Windows
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for Solaris
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for Windows
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for AIX
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for Windows
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Solaris
6.0.2.11: WebSphere Application Server V6.0.2 Fix Pack 11 for Solaris platforms
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for Solaris
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for Linux
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for Windows
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for HP-UX
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for AIX
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Windows
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for Solaris
6.0.2.13: WebSphere Application Server V6.0.2 Fix Pack 13 for AIX platforms
6.0.2.13: WebSphere Application Server V6.0.2 Fix Pack 13 for HP-UX platforms
6.0.2.11: WebSphere Application Server V6.0.2 Fix Pack 11 for Windows platforms
6.0.2.11: WebSphere Application Server V6.0.2 Fix Pack 11 for HP-UX platforms
6.0.2.11: WebSphere Application Server V6.0.2 Fix Pack 11 for Linux platforms
6.0.2.13: WebSphere Application Server V6.0.2 Fix Pack 13 for Windows platforms
6.0.2.13: WebSphere Application Server V6.0.2 Fix Pack 13 for Linux platforms
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for AIX
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for Linux
6.0.2.15: WebSphere Application Server V6.0.2 Fix Pack 15 for OS/400
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for HP-UX
6.0.2.15: WebSphere Application Server V6.0.2 Fix Pack 15 for HP-UX
6.0.2.9: WebSphere Application Server V6.0.2 Fix Pack 9 for Solaris platforms
5.1.1.12: WebSphere Application Server V5.1.1 Cumulative Fix 12 for Solaris
6.0.2.7: WebSphere Application Server V6.0.2 Fix Pack 7 for HP-UX platforms
6.0.2.7: WebSphere Application Server V6.0.2 Fix Pack 7 for Linux platforms
6.0.2.7: WebSphere Application Server V6.0.2 Fix Pack 7 for Windows platforms
6.0.2.9: WebSphere Application Server V6.0.2 Fix Pack 9 for AIX platforms
6.0.2.9: WebSphere Application Server V6.0.2 Fix Pack 9 for HP-UX platforms
6.0.2.9: WebSphere Application Server V6.0.2 Fix Pack 9 for Linux platforms
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for Solaris
6.0.2.25: WebSphere Application Server V6.0.2 Fix Pack 25 for Linux platforms
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for AIX
6.0.2.25: WebSphere Application Server V6.0.2 Fix Pack 25 for Solaris
6.0.2.25: WebSphere Application Server V6.0.2 Fix Pack 25 for Windows platforms
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for Windows
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for HP-UX
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Solaris
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for Solaris
5.1.1.13: WebSphere Application Server V5.1.1 Cumulative Fix 13 for Linux
6.0.2.15: WebSphere Application Server V6.0.2 Fix Pack 15 for AIX
6.0.2.15: WebSphere Application Server V6.0.2 Fix Pack 15 for Solaris
6.0.2.19: WebSphere Application Server V6.0.2 Fix Pack 19 for AIX platforms
6.0.2.17: WebSphere Application Server V6.0.2 Fix Pack 17 for OS/400 platform
6.0.2.17: WebSphere Application Server V6.0.2 Fix Pack 17 for Solaris
6.0.2.17: WebSphere Application Server V6.0.2 Fix Pack 17 for Windows platforms
6.0.2.17: WebSphere Application Server V6.0.2 Fix Pack 17 for HP-UX platforms
6.0.2.17: WebSphere Application Server V6.0.2 Fix Pack 17 for AIX platforms
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for AIX
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for Linux
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for Windows
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Windows
5.0.2.18: WebSphere Application Server 5.0.2 Cumulative Fix 18 for Linux
5.1.1.11: WebSphere Application Server V5.1.1 Cumulative Fix 11 for HP-UX
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for HP-UX
5.0.2.16: WebSphere Application Server 5.0.2 Cumulative Fix 16 for Linux
5.1.1.10: WebSphere Application Server V5.1.1 Cumulative Fix 10 for Solaris
6.0.2.11: WebSphere Application Server V6.0.2 Fix Pack 11 for AIX platforms
6.0.2.19: WebSphere Application Server V6.0.2 Fix Pack 19 for HP-UX platforms
6.0.2.19: WebSphere Application Server V6.0.2 Fix Pack 19 for Windows platforms
6.0.2.13: WebSphere Application Server V6.0.2 Fix Pack 13 for Solaris platform
6.0.2.19: WebSphere Application Server V6.0.2 Fix Pack 19 for OS/400 platform
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for AIX
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for HP-UX
6.0.2.21: WebSphere Application Server V6.0.2 Fix Pack 21 for HP-UX platforms
6.0.2.21: WebSphere Application Server V6.0.2 Fix Pack 21 for Linux platforms
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for HP-UX
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Linux
6.0.2.23: WebSphere Application Server V6.0.2 Fix Pack 23 for Windows platforms
6.0.2.23: WebSphere Application Server V6.0.2 Fix Pack 23 for Solaris
6.0.2.23: WebSphere Application Server V6.0.2 Fix Pack 23 for OS/400 platform
6.0.2.15: WebSphere Application Server V6.0.2 Fix Pack 15 for Windows
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Linux
6.0.2.23: WebSphere Application Server V6.0.2 Fix Pack 23 for Linux platforms
6.0.2.21: WebSphere Application Server V6.0.2 Fix Pack 21 for AIX platforms
6.0.2.21: WebSphere Application Server V6.0.2 Fix Pack 21 for Windows platforms
6.0.2.21: WebSphere Application Server V6.0.2 Fix Pack 21 for Solaris platforms
6.0.2.19: WebSphere Application Server V6.0.2 Fix Pack 19 for Solaris
6.0.2.17: WebSphere Application Server V6.0.2 Fix Pack 17 for Linux platforms
6.0.2.19: WebSphere Application Server V6.0.2 Fix Pack 19 for Linux platforms
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for HP-UX
6.0.2.31: WebSphere Application Server V6.0.2 Fix Pack 31 for AIX platforms
6.0.2.31: WebSphere Application Server V6.0.2 Fix Pack 31 for HP-UX platforms
6.0.2.31: WebSphere Application Server V6.0.2 Fix Pack 31 for OS/400 platform
6.0.2.31: WebSphere Application Server V6.0.2 Fix Pack 31 for Linux platforms
6.0.2.31: WebSphere Application Server V6.0.2 Fix Pack 31 for Solaris
6.0.2.31: WebSphere Application Server V6.0.2 Fix Pack 31 for Windows platforms
V6.0.2: Java SDK 1.4.2 SR11 Cumulative Fix for IBM WebSphere Application Server



APAR status
Closed as program error.

Error description
There is an issue with the current scoring scheme when the
following scenario is present.

Example:

Request of 
http://hostname/abc/login.jsp

<UriGroup Name="URI_1">
 <Uri AffinityCookie="JSESSIONID"
AffinityURLIdentifier="jsessionid" Name="*.jsp"/>
</UriGroup>

<UriGroup Name="URI_2">
 <Uri AffinityCookie="JSESSIONID"
AffinityURLIdentifier="jsessionid" Name="/abc/*"/>
</UriGroup>

According to our current scheme, both URI groups would produce
the same score, and would result in sending the request to the
first one found.  Given the request above, it's obvious that it
should be handled by the Cluster associated to URI Group URI_2.
Local fix
Manually edit the plugin-cfg.xml file to switch the order of the
URI group so the correct server is picked first.
Problem summary
****************************************************************
* USERS AFFECTED: Users of WebSphere Application Server        *
*                 webserver plug-ins.                          *
****************************************************************
* PROBLEM DESCRIPTION: Plug-in routes requests to servers by   *
*                      matching incoming URIs with the URI     *
*                      patterns in plugin-cfg.xml.  When an    *
*                      incoming URI matches multiple URI       *
*                      patterns that having the same score,    *
*                      plug-in picks up the first match.       *
*                                                              *
*                      While this matching methodology works   *
*                      in most cases, however, it could        *
*                      sometimes make plug-in pick up an       *
*                      unintended server.  For example, both   *
*                      URI patterns "*.jsp" and "/ab/*"        *
*                      match the URI "/ab/test.jsp", and       *
*                      both patterns score 4.  The second      *
*                      pattern is preferred over the second.   *
*                      Under current design, the pattern       *
*                      listed first will be picked, which      *
*                      sometimes could cause unexpected        *
*                      result.                                 *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Incoming requests sometimes were not routed to target servers
due to problems in pattern matching.
Problem conclusion
This APAR addressed this problem by doing more specific
pattern matching before wild card character.  The fix will be
available in WAS 5.0.2.16, 5.1.1.9, and 6.0.2.7 service packs.
Temporary fix Comments
APAR information
APAR number PK14635
Reported component name WAS BASE 5.0
Reported component ID 5630A3600
Reported release 00W
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2005-11-04
Closed date 2005-12-29
Last modified date 2006-02-05

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
PLUGIN          

Publications Referenced

Fix information
Fixed component name WAS BASE 5.0
Fixed component ID 5630A3600

Applicable component levels
R003 PSY    UP
R00A PSY    UP
R00H PSY    UP
R00I PSY    UP
R00P PSY    UP
R00S PSY    UP
R00W PSY    UP
R103 PSY    UP
R10A PSY    UP
R10H PSY    UP
R10I PSY    UP
R10P PSY    UP
R10S PSY    UP
R10W PSY    UP


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > General
Operating system(s):
Software version: 00W
Software edition:
Reference #: PK14635
IBM Group: Software Group
Modified date: Feb 5, 2006