PH05071: JVM hang when calling GarbageCollectorMXBean.getLastGcInfo for usageMetering-1.0

Fixes are available

APAR status

Closed as program error.

Error description

When the usageMetering-1.0 feature is enabled and configured
to report metrics to the IBM Cloud Private metering service,
a JVM hang may intermittently occur when usage metering is
collecting the metric "Java Memory After Garbage
Collection". The hang occurs when the usage metering feature
calls
com.ibm.lang.management.GarbageCollectorMXBean.getLastGcInfo
to obtain the metric.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server Liberty- Product Insights            *
****************************************************************
* PROBLEM DESCRIPTION: JVM hang when calling                   *
*                      GarbageCollectorMXBean.getLastGcInfo    *
*                      for usageMetering-1.0                   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
When the usageMetering-1.0 feature is enabled and configured to
report metrics to the IBM Cloud Private metering service, a JVM
hang may intermittently occur when usage metering is collecting
the metric "Java Memory After Garbage Collection". The hang
occurs when the usage metering feature calls
com.ibm.lang.management.GarbageCollectorMXBean.getLastGcInfo to
obtain the metric.

Problem conclusion

Collection of the "Java Memory After Garbage Collection" metric
has been disabled for JVMs that do not reliably support
collection of the metric.

The fix for this APAR is currently targeted for inclusion in fix
packs 8.5.5.15 and 9.0.0.11 for WebSphere Application Server and
18.0.0.4 for WebSphere Application Server Liberty.  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
PH05071
Reported component name
WAS LIBERTY COR
Reported component ID
5725L2900
Reported release
CD0
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-11-08
Closed date
2018-11-19
Last modified date
2018-11-19

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
WAS LIBERTY COR
Fixed component ID
5725L2900

Applicable component levels

RCD0 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSD28V","label":"WebSphere Application Server Liberty Core"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"CD0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PH05071: JVM hang when calling GarbageCollectorMXBean.getLastGcInfo for usageMetering-1.0

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

RCD0 PSY

Document Information

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