PK70172: DFHZC2411 CSNE ATTEMPTED INVALID LOGON. SENSE CODE 0835 0039 ((29)MODULE NAME: DFHZBLX) WITH LU 6.2 CONNECTIONS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You have a CICS to CICS LU6.2 connection that's cross network.
  Intermittently, you receive:
  DFHZC2411  E date time applid termid tranid nodeid attempted
  invalid logon SENSE CODE 0835 0039 ((29) Module name:  DFHZBLX).
  This particular instance involves a connection which has 2
  SNASVCMG sessions and 2 user sessions.  The dump shows the two
  SNASVCMG sessions bound, and one of the user modegroup sessions
  bound, but not the last user modegroup session. When the remote
  attempted to bind, we rejected the request. The problem is
  caused by TCTERIR (CICS responsible for re-initiation) being
  initially set to ON in the secondary user session.  After the
  sessions go down, this causes CICS to try and re-acquire the
  secondary user session as well as the primary.  The SIMLOGON
  fails because the other CDRSC has been deactivated (temporarily)
  leaving the secondary session with TCTE1RY set.  This causes the
  subsequent BIND from the partner system to be rejected DFHZC2411
  with instance 29.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Following a DFHZC2405 "node not active" *
  *                      failure, LU6.2 BINDs fail with sense    *
  *                      code 0835 0039.                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An attempt to re-acquire an LU6.2 parallel session results in
  MSGDFHZC2405 "node not active" and an exception response from
  VTAM.  The primary session indicator (TCTE1RY) is not being
  reset, so that subsequent BIND requests from the partner LU may
  be rejected with MSGDFHZC2411 sense code 08350039.
  
  Additional keywords: DFHZC2411 MSGDFHZC3477 DFHZC3477 APPC LU62
  LUTYPE62 DFHZNEP SIMLOGON SNS08350039 SNS08350000 08350000 0000
  

Problem conclusion

• DFHZNCA has been changed for MSGDFHZC2405 when processing an
  LU6.2 parallel user session. TCTE1RY will now be reset.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PK67781

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

  UK40021 UK40040

Modules/Macros

•    DFHZNAC  DFHZNCA
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK40021

     UP08/10/02 P F810

• R500 PSY UK40040

     UP08/10/02 P F810

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.