PQ94346: SPECIAL HEAVY LOAD SITUATION (STRESS CONDITION) DEADLOCKS WILL OCCUR IN THE CLAIMS API | |||||||||||||||||||||||||||||||||||||||||||||
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![]() APAR status Closed as program error. Error description special heavy load situation (stress condition) deadlocks will occur in the CLAIMS APILocal fix Problem summary **************************************************************** * USERS AFFECTED: WebSphere Application Server Enterprise * * Edition 5.0.x users of Process Choreographer * * with high system load - when a very high * * number of cancel claim requests and query * * work item requests are started * * simultaneously. * **************************************************************** * PROBLEM DESCRIPTION: This problem occurs only under high * * system load when a very high number of * * cancel claim requests and query * * work item requests are started * * simultaneously. * * Some requests cannot be completed * * successfully but end with a deadlock * * exception. * **************************************************************** * RECOMMENDATION: * **************************************************************** Both the cancel claim request and the query work item request operate on the same process choreographer database tables. This can lead to deadlocks in some situations.Problem conclusion The locking strategy has been changed for these requests (cancel claim and query work item) which solves the problem for this type of operation.Temporary fix Comments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: Modules/Macros Publications Referenced
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Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server > Enterprise Edition (EE)
Operating system(s):
Software version: 00A
Software edition:
Reference #: PQ94346
IBM Group: Software Group
Modified date: Nov 18, 2004
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