PI11589: DFHSO0001 AN ABEND (CODE ---/AKEC) HAS OCCURRED AT OFFSET X'FFFF' IN MODULE DFHSOPL

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The RECLAIM_SOCKET routine in DFHSOPL tries to iterate over the
  socket pools to find a socket that can be released for use.
  If no pooled sockets are available, DFHSOPL loops until
  the runaway cancels the task.
  Loop happens because the first pool is checked and instead of
  moving on to the second pool and then finishing, the first pool
  is checked again and again.
  

Local fix

• code Socketclose(0)
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHSO0001 An abend (CODE ---/AKEC) has  *
  *                      occurred at offset x'FFFF' in module    *
  *                      DFHSOPL.                                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Outbound HTTP connection pooling is being used in CICS. When
  CICS is at the MAXSOCKETS limit another socket is required for
  a new request. DFHSOMG calls DFHSOPL for function RECLAIM_SOCKET
  to try and release a socket from a connection pool that is not
  currently being used. DFHSOPL attempts to scan through all the
  available socket pools in turn trying to locate a suitable
  unused socket to close. The socket pools are all empty at this
  time and there are no sockets available to reclaim. This
  condition causes DFHSOPL to enter a loop repeatedly trying to
  locate a socket in the first socket pool. The loop is eventually
  terminated by the runaway timer and message DFHSO0001 is issued.
  

Problem conclusion

• DFHSOPL has been changed so that it no longer attempts to
  reclaim a pooled socket when the socket pools are empty.
  

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:

  PI12532 UI15972

Modules/Macros

•    DFHSOAD  DFHSOCK  DFHSODM  DFHSODUF DFHSOIS
  DFHSOL   DFHSOLI  DFHSOLS  DFHSOLX  DFHSOM01 DFHSOM02 DFHSOM03
  DFHSOPL  DFHSORD  DFHSOSE  DFHSOST  DFHSOS00 DFHSOS01 DFHSOS02
  DFHSOS03 DFHSOS04 DFHSOS05 DFHSOS06 DFHSOS07 DFHSOS08 DFHSOS09
  DFHSOS10 DFHSOS11 DFHSOS12 DFHSOS13 DFHSOS14 DFHSOS15 DFHSOS16
  DFHSOS17 DFHSOS18 DFHSOS19 DFHSOS20 DFHSOS21 DFHSOS22 DFHSOS23
  DFHSOTB  DFHSOTI  DFHSOTRI DFHSOUE  DFHSOXM
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R700 PSY UI15972

     UP14/03/20 P F403

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.