PK37613: DEBUGSESSIONCROSSOVER PROPERTY GENERATES FALSE POSITIVES

 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
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
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
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
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for AIX
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
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for Solaris
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Solaris
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
5.1.1.14: WebSphere Application Server V5.1.1 Cumulative Fix 14 for HP-UX
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
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
5.1.1.15: WebSphere Application Server V5.1.1 Cumulative Fix 15 for Linux
5.1.1.19: WebSphere Application Server V5.1.1 Cumulative Fix 19 for HP-UX



APAR status
Closed as program error.

Error description
Following a transaction rollback, a false crossover message
was reported by DebugSessionCrossover property.
Local fix Problem summary
****************************************************************
* USERS AFFECTED: WebSphere Application Server Version 5.1.1   *
*                 users of sessions.                           *
****************************************************************
* PROBLEM DESCRIPTION: A session crossover detection warning   *
*                      can occur if the WebContainer throws    *
*                      an exception.                           *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
If a TransactionRolledbackException occurs while the
WebContainer is processing a post invoke a counter the session
uses will fail to be properly decremented.  This can result in
a session crossover detection warning.
Below is an example of the type of exception that can be thrown:


HttpForwardViewCommandImpl forwardDocument CMN1244E: An error
 occurred when forwarding document /PostalStore/ShoppingArea/
CatalogSection/SearchSubsection/CatalogSearchResultDisplay.jsp.
 javax.servlet.ServletException:
GlobalTransaction rolled-back due to timeout or setRollbackOnly
javax.servlet.ServletException:
GlobalTransaction rolled-back due to timeout or setRollbackOnly
at com.ibm.ws.webcontainer.webapp.WebAppTransactionCollaborator.

postInvoke(WebAppTransactionCollaborator.java:226)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.
dispatch(WebAppRequestDispatcher.java:695)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.
forward(WebAppRequestDispatcher.java:208)
Problem conclusion
The WebContainer code was modified to wrap the calls in a
try/catch/finally block so the sessionPostInvoke method
will be called regardless of an exception occurring.

The fix for this APAR is currently targeted for inclusion in
fixpack 5.1.1.14. 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 PK37613
Reported component name WEBSPHERE BASE
Reported component ID 5630A3600
Reported release 10S
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2007-01-17
Closed date 2007-02-21
Last modified date 2007-02-21

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
ENGINE          

Publications Referenced

Fix information
Fixed component name WEBSPHERE BASE
Fixed component ID 5630A3600

Applicable component levels
R003 PSN    UP
R00A PSN    UP
R00H PSN    UP
R00I PSN    UP
R00P 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: 10S
Software edition:
Reference #: PK37613
IBM Group: Software Group
Modified date: Feb 21, 2007