APAR status
Closed as program error.
Error description
Enabling session serial access causes a performance degradation,
noticed only in 5.1.1.8. Delay is happening because of
the synchronization block within the SessionContext preinvoke.
Local fix Problem summary
****************************************************************
* USERS AFFECTED: WebSphere Application Server users who *
* have enabled the *
* "allowSerializedSessionAccess" httpsession *
* property for applications. *
****************************************************************
* PROBLEM DESCRIPTION: When the application is configured to *
* allow serial access of httpsessions, *
* requests sent to applications may *
* appear to hang until the maximun wait *
* time is reached. *
****************************************************************
* RECOMMENDATION: *
****************************************************************
There is a locking problem in session manager when handling
serial httpsession access with multiple requests. The requests
are blocked until the maximum wait time has elapsed.
If "accessSessionOnTimeout" is enabled, the requests are
processed after the timeout.
If "accessSessionOnTimeout" is disabled, the requests are not
handled after the timeout, and the following exception is
reported in the log:
WebApp E SRVE0026E: [Servlet Error]-[/secure/navigator.jsp]:
java.lang.RuntimeException: Session Lock time outException
at com.ibm.ws.webcontainer.httpsession.
SessionContext.sessionPreInvoke(SessionContext.java:2763)
at com.ibm.ws.webcontainer.srt.SRTRequestContext
.sessionPreInvoke(SRTRequestContext.java:45)
at com.ibm.ws.webcontainer.webapp.WebAppDispatcherContext
.sessionPreInvoke(WebAppDispatcherContext.java:270)
....
Problem conclusion
The sesssion manager code has been corrected to properly handle
httpsesssion serial access and the locking problem has been
resolved.
The fix for this APAR is currently targeted for inclusion in
fixpack 5.0.2.17, 5.1.1.10, and 6.0.2.9
Please refer to the Recommended Updates page for delivery
information:
http://www-1.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix Comments
APAR information |
APAR number |
PK19389 |
Reported component name |
WAS BASE 5.0 |
Reported component ID |
5630A3600 |
Reported release |
10A |
Status |
CLOSED PER |
PE |
NoPE |
HIPER |
NoHIPER |
Special Attention |
NoSpecatt |
Submitted date |
2006-02-09 |
Closed date |
2006-02-14 |
Last modified date |
2006-02-14 |
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
Publications Referenced
|
Fix information |
Fixed component name |
WAS BASE 5.0 |
Fixed component ID |
5630A3600 |
Applicable component levels |
R00A PSY |
UP |
R00H PSY |
UP |
R00I PSY |
UP |
R00P PSY |
UP |
R00S PSY |
UP |
R00W PSY |
UP |
R10A PSY |
UP |
R10H PSY |
UP |
R10I PSY |
UP |
R10P PSY |
UP |
R10S PSY |
UP |
R10W PSY |
UP |
|