IC74296: MQ V7 REQUESTER-SERVER CHANNEL WITH A SECURITY EXIT HANGS WHEN STARTED FROM REQUESTER INSTEAD OF SERVER

WebSphere MQ V7.0 Fix Pack 7.0.1.6
WebSphere MQ V7.0.1 for i5/OS Fix Pack 7.0.1.6

APAR status

• Closed as program error.

Error description

• A WebSphere MQ v7 Requester-Server channel defined with a
  security exit will hang if the channel is started from the
  Requester side of the channel. The Requester channel goes into
  request state, and the Server channel goes into binding state.
  
  If the channel is started from the Server side then the
  channel goes into RUNNING state.
  
  ADDITIONAL KEYWORDS: hangs hanging hung loop loops looping chl
  status connection RQSTR SVR amqrspin starts startup SVR/RQSTR
  Requester/Server Server/Requester RQSTR-SVR RQSTR/SVR SVR-RQSTR
  SCYEXIT
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  WebSphere MQ V7 users using security exit on Requester-Server
  channel pair.
  
  Platforms affected:
  All Distributed (iSeries, all Unix and Windows)
  ****************************************************************
  PROBLEM SUMMARY:
  The requester-server channel pair does not start when defined
  with security exits. The security exchanges loops infinitely
  when the channel is started from the requester side. The
  channel starts fine if started from the server side.
  

Problem conclusion

• The problem was occurring since requester was not sending the
  STATUS_DATA segment to the server when a exit response of
  MQXCC_OK is received. As a result of this the security exchange
  loops through infinitely causing the requester side of the
  channel to remain in requesting state while the server in
  binding state. The code is modified to appropriately identify
  the completion of the security exchange and to start the
  channel successfully.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
                     v7.0
  Platform           Fix Pack 7.0.1.6
  --------           --------------------
  Windows            U200328
  AIX                U840698
  HP-UX (PA-RISC)    U841555
  HP-UX (Itanium)    U841560
  Solaris (SPARC)    U841556
  Solaris (x86-64)   U841562
  iSeries            tbc_p700_0_1_6
  Linux (x86)        U841557
  Linux (x86-64)     U841561
  Linux (zSeries)    U841558
  Linux (Power)      U841559
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available, information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

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

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

  PM35926

Fix information

• Fixed component name

  WMQ WINDOWS V7

• Fixed component ID

  5724H7220

Applicable component levels

• R700 PSY

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