PI27262: Z/OS WEBSPHERE PUBLIC VARIABLE NEEDED TO DISABLE FFDC LOGGING OF BUFFER OVERFLOW EVENTS.

Fixes are available

APAR status

Closed as program error.

Error description

In 8.5.5.1 support was released to generate an FFDC log when
sysprint buffer overflow events occur.    This function is
enabled by default.    A private variable exists to disable
this function.    Request is to make this a public, documented
variable.
Additional symptoms:
com.ibm.ejs.ras.NativeMessageOverflowException
***BUFFER OVERFLOW***
ffdc flood
ffdc directory size entry count entries

Local fix

You can
disable the logging of buffer overflow events  by setting:

private_bbor_enable_buffer_overflow_ffdc_logging to 0
Go to Environment---WebSphere Variables then set scope at
cell/node as
desired and then select new.
Name:  private_bbor_enable_buffer_overflow_ffdc_logging
Value:  0

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V8.0 and V8.5                        *
****************************************************************
* PROBLEM DESCRIPTION: Unable to increase trace log            *
*                      buffer size. Unable to disable the      *
*                      creation of FFDC logs when a            *
*                      truncated trace is generated.           *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
When traces are large, they maybe truncated if their size
exceed internal trace buffer lengths. There is no documented
setting to increase the size of the trace buffers to prevent
traces from being truncated.
When traces are truncated, FFDC logs are created to provide
access to the full trace information. However, there is no
documented setting to disable the creation of these FFDC logs.
Note that when a trace is truncated a BUFFER_OVERFLOW string is
appended to the end of the trace.

Problem conclusion

Environment variable ras_max_string_buffer_size was added to
allow users to increase the size of WebSphere on z/OS' trace
buffers.

Environment variable ras_enable_buffer_overflow_ffdc_logging
was added to allow users to disable creating FFDC log entries
when BUFFER_OVERFLOW conditions take place.

APAR PI27262 is currently targeted for inclusion in Fix Packs
8.0.0.11 and 8.5.5.5 WebSphere Application Server.

In addition, sysroute APAR PI31128 in Fix Pack 7.0.0.37 will
provide the fix in for WebSphere Application Server V7.0.

Please refer to the Recommended Updates page for delivery
information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

In addition, please refer to URL:
http://www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
for Fix Pack PTF information.

Temporary fix

Comments

APAR Information

APAR number
PI27262
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-10-08
Closed date
2014-12-08
Last modified date
2015-05-16

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

PI31128

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R850 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PI27262: Z/OS WEBSPHERE PUBLIC VARIABLE NEEDED TO DISABLE FFDC LOGGING OF BUFFER OVERFLOW EVENTS.

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

R850 PSY

Document Information

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