PQ71648: DOC APAR TO DESCRIBE SYNTAX AND BEHAVIOR OF INVOCATIONCACHESIZE PARAMETER FOR WEBSPHERE APPLICATION SERVER FOR Z/OS V4.01

APAR status
Closed as documentation error.

Error description
Currently there is no documentation to describe the syntax and
the behavior of the parameter invocationCacheSize.
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All users of WebSphere Application Server    *
*                 V4.0.1 for z/OS and OS/390                   *
*                                                              *
****************************************************************
* PROBLEM DESCRIPTION: Appendix A of "WebSphere Application    *
*                      Server V4.0.1 forz/OS and OS/390 does   *
*                      not include a description of the        *
*                      invocationCacheSize JVM property.       *
*                                                              *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The sections "JVM property use" and "
Properties descriptions in Appendix A of "WebSphere Application
Server V4.0.1 for z/OS and OS/390: Assembling J2EE Applications"
does not include a description of  the invocationCacheSize JVM
property.
Problem conclusion
The following information will be added to
Appendix A of "WebSphere Application Server V4.0.1 for z/OS and
OS/390: Assembling J2EE Applications," SA22-7836:
 1. Table 24 will be updated to include the invocationCacheSize
    property, along with an indication that it applies to a
    J2EE server instance.
 2. The following information will be added to the section
    "Properties descriptions:

    invocationCacheSize=<size of the cache>
    The invocation cache holds information for mapping request
    URLs to servlet resources. A cache of the requested size is
    created for each worker thread that is available to process
    a request.
    The number of worker threads is determined by the value
    specified for the BBOO_WORKLOAD_PROFILE environment variable
    If more than 50 unique URLs  (JSPs) are actively being used,
    you should increase this parameter. Increasing this paramete
    enables a cached object to be used. This avoids the need to
    create a new java object, and results in improved performanc
    Note: A larger cache uses more of the Java heap, so you migh
    need to increase maximum Java heap size. For example, if eac
    cache entry requires 2KB, maximum number of worker threads
    size is set to 25, and the URL invocation cache size is 100,
    you must allow for 5MB of heap storage that will be dedicate
    to this cache and inaccessible by the application.

NOTE: Periodically, we refresh the documentation on our Web site
so the changes might have been made before youread this text. To
access the latest on-line documentation, go to the product
library page at:

http://www.ibm.com/software/webservers/appserv/zos_os390/
library.html
Temporary fix Comments
APAR information
APAR number PQ71648
Reported component name WEBSPHERE OS/39
Reported component ID 5655A9800
Reported release 401
Status CLOSED DOC
PE NoPE
HIPER NoHIPER
Submitted date 2003-03-04
Closed date 2003-06-18
Last modified date 2003-06-18

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros

Fix information

Applicable component levels


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS
Operating system(s):
Software version: 401
Software edition:
Reference #: PQ71648
IBM Group: Software Group
Modified date: Jun 18, 2003