PK51380: CICS REGION GOES SOS DUE TO ORPHANED PGHTBS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The CICS region goes Short-on-Storage above the line in ECDSA
  due to PGHTBs that became orphaned.  Almost all of the PGHTB
  pages are empty except for 3 words at the end that contain
  information for a Handle Abend.  One word points to the handle
  routine, DFHEDFX.  In the trace, we saw DFHEDFX getting and
  freeing the HTBs, but every not and then, it gets one it does
  not free, as part of an XCTL request.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: SOS condition in ECDSA due to build up  *
  *                      of PGHTB storage.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  With EDF active an application is run that XCTL's to a program
  which then returns to a lower level program and repeats the
  loop.
  Across XCTL processing DFHEDFX issues a Handle Abend command
  and getmains a new 4K block of PGHTB subpool storage into which
  a handle abend table is created. When DFHEDFX terminates, the
  table does not get freemained and so becomes orphaned.
  This occurs through each iteration of the loop until PGHTB
  storage becomes depleted and CICS goes SOS and issues message
  DFHSM0133.
  Only the Handle Abend from programs that issue EXEC CICS XCTL
  commands should be passed to the XCTLd program and not those
  that have been issued by CICS modules.
  
  Additional Keywords : MSGDFHSM0133 SM0133 SOS short-on-storage
  

Problem conclusion

• DFHAPLI1 has been updated so that at termination of DFHEDFX
  handle tables are always freed.
  

Temporary fix

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

Comments

APAR Information

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

  PK51362

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

  UK28984

Modules/Macros

•    DESLI1   DFHAPLI1
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R500 PSY UK28984

     UP07/09/14 P F709

Fix is available

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