JR35280: DLUR / DLUS SESSION HANGS PSEST AFTER RECYCLE OF TARGET APPLICATION.

Communications Server for Windows, Version 6.1.3 -- Latest Fixpack

APAR status

• Closed as program error.

Error description

• DLUR / DLUS session hangs PSEST after recycle of target
  application.   When target Application is restarted, in this
  case CICS, a new BIND request is sent from the DLUS but no
  response from DLUR (CS/Linux).
  

Local fix

• contact Level/2 support for availability of efix.
  

Problem summary

• *  USERS AFFECTED: ALL TN3270 users.
  *
  *  PROBLEM DESCRIPTION:
  *   Following CICS reset some TN3270 sessions to internal DLUR
  *   LUs could not be re-established under stress. BINDs are not
  *   responded to. Session hangs in VTAM 'PSEST'.  The users must
  *   issue the VTAM Vary Inact/Act command to recover from the
  *   hang.
  *
  *  PROBLEM SUMMARY:
  *   During session termination, If the UNBIND is received before
  *   the DACTLU AND the the DACTLU is received before the UNBIND
  *   response can be sent to the mainframe (while it is queued to
  *   the tnserver component) then CS/Linux fails to respond to
  *   the UNBIND. If the mainframe reuses that independent LFSID
  *   the subsequent BIND is not responded to (the application
  *   cannot reconnect).  Thus the new session will hang 'PSEST'.
  ****************************************************************
  

Problem conclusion

• SNAPIXR/Driver.o code has been changed to correctly send the
  UNBIND response when DACTLU is received for a DLUR LU.
  

Temporary fix

• efix available - contact Level/2.
  

Comments

APAR Information

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

  LI73892

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

Fix information

• Fixed component name

  COMM SERV NT 6.

• Fixed component ID

  5639F2503

Applicable component levels

• R613 PSY

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