APAR status
Closed as program error.
Error description
AppServer hang in the DRS code under heavy load when memory to
memory sessions is enabled. Most of the threads in the javacore
get stuck with the following stack.
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java(Compiled Code))
at com.ibm.ws.drs.DRSPools.getAccJMS(DRSPools.java(Compiled
Code))
at com.ibm.ws.drs.DRSCacheApp.getAccJMS(DRSCacheApp.java(Compile
d Code))
at com.ibm.ws.drs.DRSJMS.jmsGetReq(DRSJMS.java(Compiled Code))
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All users of WebSphere Application Server *
* using HTTP Session memory to memory. *
****************************************************************
* PROBLEM DESCRIPTION: 2 (or more) servers hang under heavy *
* load while using session memory to *
* memory. *
****************************************************************
* RECOMMENDATION: *
****************************************************************
2 (or more) servers hang under heavy load while using session
memory to memory. This is a timing problem when numerous 'get'
requests for sessions are being generated by the session
manager for the replication service. The set of jms resources
the replication service uses to request and respond to 'get'
requests becomes constrained.
Problem conclusion
Another set of JMS resources has been created to be used to
respond to a received request for a session. This leaves the
existing set of JMS resources to only be used to make the
'get' request.
This fix for this APAR is targeted for inclusion in fixpack
5.0.2.15 and 5.1.1.8. 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 |
PK13853 |
Reported component name |
WAS BASE 5.0 |
Reported component ID |
5630A3600 |
Reported release |
10I |
Status |
CLOSED PER |
PE |
NoPE |
HIPER |
NoHIPER |
Special Attention |
NoSpecatt |
Submitted date |
2005-10-21 |
Closed date |
2005-11-01 |
Last modified date |
2005-11-01 |
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 |
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 |
|