PQ91739: SYSTEM HANGS UNDER HEAVY LOAD WHEN USING LARGE DATA OBJECT FOR MEMORY TO MEMORY REPLICATION

 Fixes are available

5.1.1.8: WebSphere Application Server 5.1.1 Cumulative Fix 8 for AIX
5.1.1.8: WebSphere Application Server 5.1.1 Cumulative Fix 8 for Windows
5.1.1.8: WebSphere Application Server 5.1.1 Cumulative Fix 8 for HP-UX
5.1.1.8: WebSphere Application Server 5.1.1 Cumulative Fix 8 for Solaris
5.1.1.6: WebSphere Application Server Version 5.1.1 Cumulative Fix 6
5.1.1.7: WebSphere Application Server Version 5.1.1 Cumulative Fix 7
5.1.1.4: WebSphere Application Server Version 5.1.1 Cumulative Fix 4
5.1.1.8: WebSphere Application Server 5.1.1 Cumulative Fix 8 for Linux



APAR status
Closed as program error.

Error description
3 way deadlock (Session, DRS, disthub)
This APAR is for the Session code, Yonghe provided testfix
for this deadlock during bootstrap
Local fix
testfix provided to customer
Problem summary
****************************************************************
* USERS AFFECTED: WebSphpere Application Server users who use  *
*                 memory to memory session replication         *
****************************************************************
* PROBLEM DESCRIPTION: System will hang during a heavy load.   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Customer has a very big session data object to do memory to
memory replication, which is not recommended.
Problem conclusion
Reduced the synchronization block in session code. This is the
session part of the fix.
Temporary fix Comments
APAR information
APAR number PQ91739
Reported component name WAS BASE 5.0
Reported component ID 5630A3600
Reported release 00S
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2004-07-21
Closed date 2004-10-04
Last modified date 2004-11-18

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
SESSION          

Publications Referenced

Fix information

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: 00S
Software edition:
Reference #: PQ91739
IBM Group: Software Group
Modified date: Nov 18, 2004