PM88159: WHEN A CALL STACK ENCOUNTERS ***BUFFER OVERFLOW*** AND IS TRUNCATED, GENERATE AN FFDC LOG TO CAPTURE THE FULL CALLSTACK

Fixes are available

APAR status

Closed as program error.

Error description

When a call stack exceeds the buffer size, the entry in the
SYSPRINT log is truncated with the message ***BUFFER OVERFLOW***
and the full call stack is unavailable.
This APAR will change the behavior to generate an ffdc log with
the full call stack.

Local fix

The custom property private_bbor_bborto_max_str
can be used to increase the buffer size.
Set this variable using the adminconsole along this path:
Environment > WebSphere Variables > {set node scope} >
   click New button   Name   private_bbor_bborto_max_str

Please note that use of this private environment variable is
only recommended for debug purposes.
Initially set the value to 131072 (128K) and see if the Buffer
Overflow condition persists.  If it does, continue increasing
the value in 128K increments until the Buffer Overflow condition
is resolved.  Once the appropriate data is obtained, the
variable should be deleted to ensure that future tracing uses
the default buffer size, thereby avoiding unnecessary spool.


You need to restart the server to pick these changes up.

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V7.0, V8.0, and V8.5                 *
****************************************************************
* PROBLEM DESCRIPTION: Some trace entries in the SYSPRINT      *
*                      log are truncated showing the string:   *
*                      ***BUFFER OVERFLOW***                   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Some trace entries in the SYSPRINT log do not display the
complete trace data. The string ***BUFFER
OVERFLOW*** appears at the end of the truncated trace.
This happens because, in some instances, the amount of
data being traced exceeds the size of internal predefined
trace buffers used for logging. This prevents important
debug information from being readily available for issues
encountered during workload processing.

Problem conclusion

Trace entries that experience the mentioned condition during
workload processing will have its data written to a ffdc log.
The ffdc log created will report the the following exception:
com.ibm.ejs.ras.NativeMessageOverflowException.

Truncated traces in the SYSPRINT log will show a new string:
***BUFFER OVERFLOW***TRACE DATA ROUTED TO FFDC REPORTING
A NativeMessageOverflowException***

APAR PM88159 is currently targeted for inclusion in Fix Packs
7.0.0.31, 8.0.0.8, and 8.5.5.1 of WebSphere Application
Server.

Please refer to URL:
//www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
for Fix Pack availability.

Temporary fix

Comments

APAR Information

APAR number
PM88159
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2013-04-30
Closed date
2013-06-27
Last modified date
2014-02-05

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

R700 PSY UI13725
UP14/01/11 P F401

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"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":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
11 January 2022

Tips

PM88159: WHEN A CALL STACK ENCOUNTERS BUFFER OVERFLOW AND IS TRUNCATED, GENERATE AN FFDC LOG TO CAPTURE THE FULL CALLSTACK

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

R700 PSY UI13725

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

Document Information

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