PK50327: PICCHEAP VARIABLE SIZE SOAP MESSAGE ELEMENTS CAUSE HIGH CPU UTILIZATION IN THE CICS WEBSERVICE SERVICE REQUESTOR

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A CICS Web Service Requester application receives a response
  message composed of a variable array of similar string elements.
  CPU consumption increases abnormally as the number of elements
  increases. The PICCHEAP storage increases abnormally almost
  exponentially, with GETMAINS showing increasing storage length.
  Testing a CPIH task consumed up to 40 megabytes. Complex type
  elements with multiple XML container elements were not affected,
  only simple type arrays were affected. This apar is for review
  of performance problems caused by variable sized SOAP elements.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: High CPU and storage usage when         *
  *                      a CICS Webservice parses a message      *
  *                      which contains a variable length        *
  *                      array of simple elements.               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  CICS receives a SOAP message which contains a variable
  array of simple elements.
  DFHPICC saves the whole array after parsing each element in
  case this is the last element in the array. This causes a
  large amount of storage to be used and performance is
  adversely affected.
  Additional keywords: PICCHEAP CSCBV
  

Problem conclusion

• DFHPICC has been altered so that for a variable array composed
  of simple type elements, the entire array is only saved after
  all the elements have been parsed.
  

Temporary fix

•             *********
              * HIPER *
              *********
  FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK31843 UK31844

Modules/Macros

•    DESPICC  DFHPICC
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK31843

     UP07/12/06 P F712

• R500 PSY UK31844

     UP07/12/06 P F712

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.