PK44852: WEBSPHERE APPLICATION SERVER HANG DURING ESI CLEAR CACHE CALL TOPLUGIN

 Fixes are available

6.1.0.15 WebSphere Application Server V6.1 Fix Pack 15 for i5/OS
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
6.1.0.13 WebSphere Application Server V6.1 Fix Pack 13 for AIX
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
6.1.0.15 WebSphere Application Server V6.1 Fix Pack 15 for AIX
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
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 for HP-UX
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 for Windows
6.0.2.27: WebSphere Application Server V6.0.2 Fix Pack 27 for OS/400 platform
6.1.0.13: WebSphere Application Server V6.1 Fix Pack 13 for Windows
6.1.0.17 WebSphere Application Server V6.1 Fix Pack 17 for i5/OS
6.1.0.13: WebSphere Application Server V6.1 Fix Pack 13 for i5/OS
6.1.0.13: WebSphere Application Server V6.1 Fix Pack 13 for HP-UX
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
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for Linux
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
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for Solaris
6.0.2.23: WebSphere Application Server V6.0.2 Fix Pack 23 for HP-UX platforms
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for HP-UX
6.1.0.17: WebSphere Application Server V6.1 Fix Pack 17 for Windows
6.1.0.17 WebSphere Application Server V6.1 Fix Pack 17 for AIX
6.1.0.13: WebSphere Application Server V6.1 Fix Pack 13 for Solaris
5.1.1.18: WebSphere Application Server V5.1.1 Cumulative Fix 18 for Linux
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 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
6.1.0.15: WebSphere Application Server V6.1 Fix Pack 15 for Solaris
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
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Solaris
5.1.1.16: WebSphere Application Server V5.1.1 Cumulative Fix 16 for Windows
6.0.2.25: WebSphere Application Server V6.0.2 Fix Pack 25 for Linux platforms
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
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Solaris
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Windows
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
6.1.0.11: WebSphere Application Server V6.1 Fix Pack 11 for HP-UX
6.1.0.11: WebSphere Application Server V6.1 Fix Pack 11 for Windows
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
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
6.1.0.11: WebSphere Application Server V6.1 Fix Pack 11 for Solaris
6.1.0.11: WebSphere Application Server V6.1 Fix Pack 11 for Linux
6.1.0.11: WebSphere Application Server V6.1 Fix Pack 11 for i5/OS
6.1.0.11 WebSphere Application Server V6.1 Fix Pack 11 for AIX
6.1.0.13: WebSphere Application Server V6.1 Fix Pack 13 for Linux
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for HP-UX
6.1.0.19 WebSphere Application Server V6.1 Fix Pack 19 for AIX
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for HP-UX
6.1.0.19 WebSphere Application Server V6.1 Fix Pack 19 for i5/OS
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for Linux
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for Solaris
6.1.0.19: WebSphere Application Server V6.1 Fix Pack 19 for Windows
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
6.1.0.21 WebSphere Application Server V6.1 Fix Pack 21 for AIX
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
6.1.0.21 WebSphere Application Server V6.1 Fix Pack 21 for i5/OS
6.1.0.21: WebSphere Application Server V6.1 Fix Pack 21 for Windows
6.1.0.21: WebSphere Application Server V6.1 Fix Pack 21 for Solaris
6.1.0.21: WebSphere Application Server V6.1 Fix Pack 21 for Linux
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
6.1.0.21: WebSphere Application Server V6.1 Fix Pack 21 for HP-UX



APAR status
Closed as program error.

Error description
Webcontainer threads back up waiting to enter into ESI clear
cache which is a synchronized method and is pending a completion
of socketWrite0.  The socketWrite0 cannot be completed because
the socket  WebSphere and the plugin have been communicating
thorough has gone into a bad state.  The communication from
WebSphere to the plugin resulted in a bad read at the plugin and
the socket was not torn down as expected.  This allows for
WebSphere to continue trying to write to the socket and
ultimately causing a hang.
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All IBM WebSphere Application Server users   *
*                 using the plugin and Dynamic Cache.          *
****************************************************************
* PROBLEM DESCRIPTION: WebSphere Application Server hang       *
*                      during ESI clear cache call.            *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
When the plugin ESI cache is cleared, the WebSphere Applicaton
Sserver would hang for the duration of the process.  Partially
closed sockets were unable to communicate causing hangs during
processing.
Problem conclusion
All partially closed sockets, or sockets in error states, are
closed explicitly, preventing any attempt to communicate
through them.

The fix for this APAR is currently targeted for inclusion
in cumulative fix 5.1.1.15 and fixpacks 6.0.2.21 and 6.1.0.9.
Please refer to the recommended updates page for delivery
information:

http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix Comments
APAR information
APAR number PK44852
Reported component name WAS NETWRK DEPL
Reported component ID 5630A3601
Reported release 10I
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2007-05-09
Closed date 2007-05-11
Last modified date 2007-08-23

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 NETWRK DEPL
Fixed component ID 5630A3601

Applicable component levels
R003 PSN    UP
R00A PSN    UP
R00H PSN    UP
R00I PSN    UP
R00S PSN    UP
R00W PSN    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: 10I
Software edition:
Reference #: PK44852
IBM Group: Software Group
Modified date: Aug 23, 2007