Fixes are available
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
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
APAR status
Closed as program error.
Error description
Enhance the performance of search for resources in /META-INF/resources during application startup
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: IBM WebSphere Application Server Full * * Profile versions 8.0 and 8.5.5 users * **************************************************************** * PROBLEM DESCRIPTION: Performance enhancement for resource * * searching in the /META-INF/resources. * **************************************************************** * RECOMMENDATION: * **************************************************************** Starting in Servlet Specification 3.0, static and JavaServlet Pages (JSP) resources can be packaged under the /META-INF/resources folder of a jar file which is located under the /WEB-INF/lib. These resources can be requested just like any other resources that are under the WAR root folder. The WebContainer searches for the requested resources at runtime. The search includes a sequence of unzipping and searching for the resource in each /WEB-INF/lib jar file until the resource is found. If there are a large number of jar files under the /WEB-INF/lib, this might cause a performance impact while searching the /META-INF/resources at runtime.
Problem conclusion
The WebContainer code was modified to enhance the search performance for the /META-INF/resources. During the application startup, the WebContainer searches for all the /WEB-INF/lib jars and caches the index of any /META-INF/resources. This cache is not updated or refreshed until the application is restarted. At the time of the request, the cached index will be consulted to find the requested resource. Note: 1. The new cache might consume some of the server's memory. The size is directly proportional to the total number of characters in the file name for all the /META-INF/resources jar. No actual file content is cached. 2. If a new /META-INF/resources jar is added dynamically, the application must be restarted to pick up the newly added resources. To disable the enhanced feature in this APAR, set the following WebContainer custom property: com.ibm.ws.webcontainer.searchMetaInfResourcesDuringAppStart = false (default is true) The fix for this APAR is currently targeted for inclusion in fix packs 8.0.0.10 and 8.5.5.5. 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
PI28751
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-10-31
Closed date
2014-12-02
Last modified date
2014-12-02
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
Document Information
Modified date:
28 April 2022