PK63328: RESPONSE IS CHUNKED EVEN THOUGH RESPONSE SIZE IS LESS THAN RESPONSE BUFFER SIZE.

Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR10 Cumulative Fix for WebSphere Application Server
6.1.0.31: Java SDK 1.5 SR11 FP1 Cumulative Fix for WebSphere Application Server
6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
6.1.0.29: Java SDK 1.5 SR11 Cumulative Fix for WebSphere Application Server
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
6.1.0.39: 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: WebSphere Application Server V6.1 Fix Pack 47
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server

APAR status

• Closed as program error.

Error description

• Response is getting chunked for all sizes after upgrading to
  6.0.2.19. Response should not be chunked if size is less than
  response buffer size and application not calling close() or
  flush()
  

Local fix

• non
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM WebSphere Application Server version    *
  *                  6.0.2.13 or later users who invoke the      *
  *                  RequestDispatcher forward method.           *
  ****************************************************************
  * PROBLEM DESCRIPTION: Response is returned chunked after a    *
  *                      call to the forward method of the       *
  *                      RequestDispatcher.  This can cause a    *
  *                      small performance loss when an          *
  *                      application has many dispatch forwards. *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  In fixpacks 6.0.2.13 and 6.1.0.1, a problem was fixed where a
  call to response.flushBuffer() in JavaServer Pages did not
  flush all data to the client.  However, this fix also caused
  the response data to be sent out chunked after the
  RequestDispatcher's forward method was invoked.  A chunked
  response requires more read calls by the web server plugin,
  and this has a minor performance impact.
  

Problem conclusion

• The Web Container code was modified to correct the problem.
  The response data, however, is still returned chunked if it
  exceeds the response buffer size.
  The fix for this APAR is currently targeted for inclusion in
  fix packs 6.0.2.31 and 6.1.0.19
  Please refer to the recommended updates page for delivery
  information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

• ZE Fix Error 2008/09/29, See PK72336
  ZE FiX Error 2010/03/25, see PM08760
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R60A PSY

     UP

• R60H PSY

     UP

• R60I PSY

     UP

• R60P PSY

     UP

• R60S PSY

     UP

• R60W PSY

     UP

• R60Z PSY

     UP

• R61A PSY

     UP

• R61H PSY

     UP

• R61I PSY

     UP

• R61P PSY

     UP

• R61S PSY

     UP

• R61W PSY

     UP

• R61Z PSY

     UP