Fixes are available
9.0.0.4: WebSphere Application Server traditional V9.0 Fix Pack 4
9.0.0.5: WebSphere Application Server traditional V9.0 Fix Pack 5
9.0.0.6: WebSphere Application Server traditional V9.0 Fix Pack 6
9.0.0.7: WebSphere Application Server traditional V9.0 Fix Pack 7
9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
WebSphere Application Server traditional 9.0.5.6
9.0.5.7: WebSphere Application Server traditional Version 9.0.5 Fix Pack 7
9.0.5.8: WebSphere Application Server traditional Version 9.0.5.8
9.0.5.9: WebSphere Application Server traditional Version 9.0.5.9
9.0.5.10: WebSphere Application Server traditional Version 9.0.5.10
9.0.5.11: WebSphere Application Server traditional Version 9.0.5.11
APAR status
Closed as new function.
Error description
Enable verboseGC by default on servers created using WebSphere Application Server for z/OS version 9.0.0.4.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server for z/OS. * **************************************************************** * PROBLEM DESCRIPTION: Verbose garbage collection (verboseGC) * * is disabled by default. * **************************************************************** * RECOMMENDATION: * **************************************************************** Starting in version 9.0.0.4 WebSphere Application Server for z/OS enables verboseGC by default for the Application Server, Node Agent, and Deployment Manager server types. This is a change in default behavior from previous releases wherein verboseGC is disabled by default for all server types. . "Verbose garbage collection" (verboseGC) is a setting in the Java virtual machine configuration for a server type, such as a Deployment Manager or Application Server. When verboseGC is enabled (unset or set to true) in the server configration, WebSphere Application Server supplies the standard java option "-verbose:gc" to the java command line when launching the server. The option directs the JVM to write verboseGC diagnostic data to native process streams, which on z/OS collect in JES job logs. . The new default verboseGC setting may be inappropriate for a particular server in your deployment. To disable verboseGC on a server, disable (set to false) the "Verbose garbage collection" setting in the server's Java Virtual Machine configuration. Also, ensure that the Generic JVM Arguments field of the server's Java Virtual Machine configuration does not specify command-line argument "-verbose:gc". After saving your changes to the configuration, verbose garbage collection will be disabled the next time the server is started.
Problem conclusion
VerboseGC diagnostic data is critical to troubleshooting memory and performance problems, and the overhead is generally very low. APAR PI76705 enables verboseGC by default to ensure diagnostic data is immediately available when such problems occur. . APAR PI76705 is currently targeted for inclusion in fix pack 9.0.0.4. 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
PI76705
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-02-16
Closed date
2017-03-16
Last modified date
2017-03-16
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 FOR Z
Fixed component ID
5655I3500
Applicable component levels
R900 PSY
UP
Document Information
Modified date:
04 May 2022