PK22178: DFHSO0114 CWXN TCPIPSERVICE CLOSED DFHSO0001 ABEND0C4 DFHSOS05 OFFSET X'2EA' 2EA SOCKET HAS BEEN FREED AKEA DFHSO0002 0C33

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Running CICS transaction server 3.1, you receive the following
  messages during shutdown:
  DFHSO0114 - The socket listener cannot attach the transaction
              CWXN, TCPIPSERVICE SOAP will be closed.
  DFHSO0001 - An abend (code aaa/bbbb) has occurred at offset
  X'2EA' in module DFHSOS05.  (ptf level UK07478)
  DFHSO0002 - A severe error (code x'0C33') has occurred in
              module DFHSOLS
  CICS was in the process of shutting down, so this is why
  we could not attach CWXN to process an incoming request.
  During this process, we end of freemaining the corresponding
  STE and socket from this request, but later go back to try
  and reference it. The failing instruction in DFHSOS05 was
  a CS - BA01 9424 due to R9 containing 00000000.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Message DFHSO0001 'An abend             *
  *                      (code 0C4/AKEA) has occurred            *
  *                      at offset X'02EA' in module             *
  *                      DFHSOS05 may be issued during           *
  *                      CICS shutdown.                          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During shutdown of a CICS region message DFHSO0114 'the socket
  listener cannot attach the transaction CWXN, TCPIPSERVICE SOAP'
  is issued. This message is followed by 'abend 0C4/AKEA from
  DFHSOS05' and 'A severe error (code X'0C33') has occurred in
  module DFHSOLS'.
  An attempt was being made to attach a web receiver task during
  CICS shutdown and because the CWXN task is disabled for
  shutdown, the socket gets closed and deleted.
  Following this a takesocket call is issued against the socket
  just closed because DOCLOSE flag has not been explicitly set.
  As a result, socket pointers cleared during the close are
  referenced again during the takesocket request. This causes
  an abend 0C4 to occur because storage not available to the
  task is being accessed.
  
  Additional Keywords: msgDFHSO0114 DFHSO0001 msgDFHSO0001
                       DFHSO0002 msgDFHSO0002 S0C4 abendS0C4
                       abendAKEA
  

Problem conclusion

• DFHSOS23 has been changed to always explicitly set DOCLOSE in
  the socket notify routine.
  

Temporary fix

• 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:

  UK14448

Modules/Macros

•    DESSOSO  DFHSOSOC DFHSOS00 DFHSOS01 DFHSOS02
  DFHSOS03 DFHSOS04 DFHSOS05 DFHSOS06 DFHSOS07 DFHSOS08 DFHSOS09
  DFHSOS10 DFHSOS11 DFHSOS12 DFHSOS13 DFHSOS14 DFHSOS15 DFHSOS16
  DFHSOS17 DFHSOS18 DFHSOS19 DFHSOS20 DFHSOS21 DFHSOS22 DFHSOS23
  

Fix information

• Fixed component name

  CICSTS 3.1 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK14448

     UP06/05/16 P F605

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.