PM13952: WITH ZIOP=ALL TRACING TURNED ON, A CLASSCASTEXCEPTION IS THROWN AND CAUSES ERROR CODE C9C26A21.

6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server
Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A ByteBuffer was prematurely moved to the end and never rewound,
  giving misinformation about the kind of system that is running
  during a later check of that ByteBuffer.
  
  Additional Symptoms: Problem is triggered by ZIOP=all and
  ORBRas=all tracing.
  

Local fix

• We rewind the ByteBuffer so that its contents can be read
  accurately.
  
  To obtain ZIOP=all tracing, use the following trace
  specification:
  ZIOP=all:com.ibm.ws390.ziop.ZIOPChannelBridge=all=disabled
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server V6.1.0                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: For WebSphere Application Server v6.1   *
  *                      on z/OS, an inbound IIOP request        *
  *                      suffers a CORBA::UNKNOWN exception with *
  *                      minor code C9C26A21 when 'SASRas=all' or*
  *                      'ZIOP=all=enabled' tracing is enabled.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The enabled tracing prints from and advances a ByteBuffer
  that needs to be read again later, but the second time the
  ByteBuffer is accessed it is already at its end, implicitly
  giving misleading information about its contents.
  

Problem conclusion

• The offending ByteBuffer now gets rewound before it is
  reread after the tracing advances it to its end.
  
  APAR PK13952 is currently targeted for inclusion in Service
  Level (Fix Pack) 6.1.0.33 of WebSphere Application Server V6.1.
  
  Please refer to URL:
  //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
  for Fix Pack availability.
  

Temporary fix

Comments

APAR Information

• 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

• R610 PSY UK59848

     UP10/09/11 P F009

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.