Fixes are available
APAR status
Closed as program error.
Error description
A class loader lock contention in creating ExpressionFactoryImpl objects causes performance to degrade under load.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: IBM WebSphere Application Server Version * * 8.0 and 8.5 users of the Expression * * Language (EL). * **************************************************************** * PROBLEM DESCRIPTION: A performance degradation can occur * * under heavy load for applications * * using the EL. * **************************************************************** * RECOMMENDATION: * **************************************************************** A class loader lock contention can occur on the EL class org.apache.el.ExpressionFactoryImpl during heavy load. Applications using EL expressions under heavy load will result in the creation of many ExpressionFactoryImpl objects and lead to the lock contention.
Problem conclusion
The EL code was modified so that the lock contention will not occur. The fix for this APAR is currently targeted for inclusion in fix pack 8.0.0.6. 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
PM78648
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-12-06
Closed date
2013-01-14
Last modified date
2013-03-20
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WEBSPHERE APP S
Fixed component ID
5724J0800
Applicable component levels
R800 PSY
UP
R850 PSY
UP
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