PK26453: SOS, CICS STORAGE CREEP IN ECDSA, SUBPOOL WBGENRAL

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A storage creep and possible SOS can occur in the ECDSA WBGENRAL
  subpool.  This may happen if a program issues a WEB STARTBROWSE
  HTTPHEADER without an accompanying WEB ENDBROWSE HTTPHEADER, as
  in the following sequence of commands:
  .
  EXEC CICS WEB STARTBROWSE HTTPHEADER
  EXEC CICS WEB READNEXT HTTPHEADER
  EXEC CICS WEB READNEXT HTTPHEADER
    ...
  EXEC CICS RETURN
  .
  The storage obtained during the WEB READNEXT HTTPHEADER calls is
  obtained out of the WEBGENRAL subpool in ECDSA.  A trace will
  show the GETMAIN with REMARK(READHEAD) out of DFHWBAP (UK09477)
  +x'5D8'.  This storage is not FREEMAIN'd at task termination.
  

Local fix

• Correct the application program so that it issues the EXEC CICS
  WEB ENDBROWSE HTTPHEADER before returning control to CICS.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Storage creep when EXEC CICS WEB        *
  *                      STARTBROWSE HTTPHEADER command is       *
  *                      issued without an ENDBROWSE.            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A CICS WEB aware application has an EXEC CICS WEB STARTBROWSE
  HTTPHEADER command coded. This causes storage to be getmained
  out of the WBGENRAL subpool in ECDSA but when the task
  completes this storage is not being freemained. As a result,
  WBGENRAL subpool storage can become depleted.
  This is because storage used for WEB STARTBROWSE HTTPHEADER
  commands is only freemained after issuing an EXEC CICS WEB
  ENDBROWSE HTTPHEADER command and not by any Web request tidyup
  routines.
  
  Additional Keywords: READHEAD wrb_header_browse_token SOS
             MSGDFHSM0133 DFHSM0133 SM0133
  

Problem conclusion

• Routine wbrq_tidyup has been changed to free browse header
  storage getmained by an EXEC CICS WEB STARTBROWSE HTTPHEADER
  command if any is still allocated.
  

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:

  UK16876

Modules/Macros

•    DESWBA   DESWBAP  DESWBBLI DESWBDM  DESWBRQ
  DESWBSR  DESWBXM  DESWBXN  DFHWBA   DFHWBAP  DFHWBAPF DFHWBBLI
  DFHWBDM  DFHWBRQS DFHWBSR  DFHWBXM  DFHWBXN
  

Fix information

• Fixed component name

  CICSTS 3.1 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK16876

     UP06/08/09 P F608

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.