PI91289: STORAGE LEAK IN CICS ECDSA WITH PROGRAM_LIST ELEMENTS NOT BEING FREEMAINED AFTER PI53994.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Using CICS TS 5.2, a long running transaction which uses
  a requester pipeline and makes EXEC CICS INVOKE WEBSERVICE
  command see a gradual increase in storage in CICS ECDSA.
  A CICS system dump shows that this transaction owns 16M of
  program_list elements obtained by DFHPISH.
  L803E PI 0C17 PISN  ENTRY CALL_HEADERS
  L803E PI 0C80 PISH  ENTRY RECEIVE-RESPONSE   2,,,00000000
  L803E PI 0C82 PISH  DATA  RECEIVE-RESPONSE
  L803E SM 0301 SMGF  ENTRY GETMAIN       380,YES,00,CICS
  L803E SM 0302 SMGF  EXIT  GETMAIN/OK    28A4D728
  but there is no corresponding freemain of the program_list
  storage after the user header handler program completes.
  .
  The onset of this storage leak occurred after the application
  of APAR PI53994.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Task storage build up for long-         *
  *                      running task issuing INVOKE SERVICE     *
  *                      commands.                               *
  ****************************************************************
  * RECOMMENDATION: .                                            *
  ****************************************************************
  A long running task is acting as a web service requester with at
  least 1 SOAP header handler installed in CICS.  A SOAP message
  is processed by CICS and as part of this processing a GETMAIN is
  issued for a PROGRAM_LIST. This PROGRAM_LIST storage used to be
  freemained after calling the SOAP handlers, but now that
  freemain is bypassed by CICS and the storage freed at
  task termination.
  This is not normally a problem for short lived tasks, but is for
  long running tasks making muliple INVOKE SERVICE calls.
  
  Keyword: ECDSA
  

Problem conclusion

• DFHPISN has been changed to ensure the PROGRAM_LIST storage is
  always freemained.
  

Temporary fix

Comments

APAR Information

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

  PI87928

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

  UI52929

Modules/Macros

• DFHPISN
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R100 PSY UI52929

     UP17/12/28 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.