PI12634: THE SOLOCK IS OBTAINED WHEN COMPLETING A WAIT FOR SO_LTERDC, IF THE WAIT ENDS ABNORMALLY DFHSORD EXITS STILL HOLDING THE LOCK.

APAR status

• Closed as fixed if next.

Error description

• When a TASK completes a wait for SO_LTERDC the SOLOCK is
  obtained before checking the current error response.  If the
  wait ends abnormally (for example the task is purged) then
  DFHSORD assumes the attempt to get the lock failed and
  immediately exits, still holding the lock.
  
  
  
  
  
  
  
  
  Additional Symptom(s) Search Keyword(s): KIXREVSLD
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: The SOLOCK is obtained and can never    *
  *                      be released when completing a wait for  *
  *                      SO_LTERDC, which is ended abnormally.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  CICS command SET TCPIPSERVICE CLOSED is issued in an
  application. This application gets in to DFHSORD deregister
  processing. It will post the listener task to perform the
  deregister and wait on SO_LTERDC.
  
  When the wait is ended, DFHSORD continues the process without
  checking the wait response. It then obtains the SOLOCK. If
  the wait response is not ok, DFHSORD assumes the attempt to
  get the lock failed and immediately exits, still holding the
  lock. This will cause the SOLOCK to never be released and all
  further socket related activity will hang.
  

Problem conclusion

Temporary fix

Comments

• This APAR is being closed FIN with concurrence from the
  submitting customer. This means that a fix to this APAR
  is expected to be delivered from IBM in a release which
  is being developed at the time that the APAR was closed.
  The latest release of the product to exit development at
  the time this APAR was closed was:
  CICS Transaction Server for z/OS V5.1.
  OLY87115 OLY 87115
  

APAR Information

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

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

Fix information

Applicable component levels

• R800 PSY

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