Fixes are available
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.5.5.1: WebSphere Application Server V8.5.5 Fix Pack 1
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.5.5.2: WebSphere Application Server V8.5.5 Fix Pack 2
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.5.5.3: WebSphere Application Server V8.5.5 Fix Pack 3
8.5.5.4: WebSphere Application Server V8.5.5 Fix Pack 4
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
APAR status
Closed as program error.
Error description
Server startup is regressed by 3% for an annotations enabled application.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server V8.0 and V8.5 * **************************************************************** * PROBLEM DESCRIPTION: Application startup is delayed by up * * to 3% for applications which contain * * annotations enabled metadata. * **************************************************************** * RECOMMENDATION: * **************************************************************** A change in class loading, which was introduced by the upgrade of the Java Development Kit (JDK), caused a regression of startup for annotations enabled applications of approximately 3%. The regression is caused by changes to class loading order. The JDK upgrade was from a base level of pap6460_26sr3-20120810_01(SR3) to an updated level of pap6460_26sr5ifix-20130301_01(SR5+IV36426). The problem is most severe on AIX, but is present in all operating systems.
Problem conclusion
No actual defect is present. The regression was caused by unavoidable changes to classloading which were introduced by a JDK update. The problem was resolved by an update to the algorithm used for loading classes during annotations processing. The update provides a speedup of approximitely 5%. The classloading algorithm was tuned to search most recently successful classpath elements first when locating new classes. The update provides a small reduction of memory usage. The fix for this APAR is currently targeted for inclusion in fix packs 8.0.0.7 and 8.5.5.1. 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
PM90581
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-06-06
Closed date
2013-07-29
Last modified date
2013-07-29
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
WEBS APP SERV N
Fixed component ID
5724H8800
Applicable component levels
R800 PSY
UP
R850 PSY
UP
Document Information
Modified date:
11 January 2022