OW16419: PSESST 08390001 USSMSG7 LOGOFF

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When VTAM is providing boundary function for both the PLU
  and SLU, session display PSESST (PLU owes SESST signal).  When
  the session is terminated, SLU receives USSMSG7 with 08390001
  SENSE.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All who use VTAM Boundary Function.          *
  ****************************************************************
  * PROBLEM DESCRIPTION: VTAM does not send BFSESSST from the    *
  *                      boundary function (BF) of the PLU.      *
  *                      This causes the session on the SLU      *
  *                      HOST to display PSEST-P.  When the      *
  *                      session is terminated, the              *
  *                      SLU receives USSMSG7 with 08390001      *
  *                      sense code.                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  This problem occurs when VTAM is providing the boundary
  function for both the PLU and the SLU, because ISTTSCTR
  no longer sends BFSESST for the PLU in this situation.
  
  The following scenario is observed:
  
                      ICN(V4.3)
          _______________________________
  SLU     |SASSCP       BFPLU    SLUAPPN|
          |_____________________________|
    INIT SELF
  ----------->
                       SRQ
              --------------------->
                                  SCR
                                 ----->
                                  SCP
                                 ----->
                                  SRC
                                 ----->
                      SRC
              <--------------------
                      SRQ
              -------------------->
                              LOCATE/FIND/CDINIT
                              -------------------
                      BIND(RSCV)
                     <-----------
                      BFINIT(RSCV)
              <-------------------
                      ARC
              <--------------------------
                      BFCINIT
              ------------------->
                      GBIND
                     <----------
             BIND (REQ)
  <---------------------
             BIND(RSP)
  ---------------------->
             SESSST
  ------------------>
  
  There is NO BFSESSST sent from the BF of the PLU.
  This causes the session on the SLU host to display
  PSEST.  Because there is no BFSESSST, the SSCP
  has a USSMSG7 queued in case the session fails.
  The USSMSG7 will remain queued until the
  SESSST is received on both the SLU and PLU's
  behalf or the session fails.  When the session is
  terminated, the queued USSMSG7 is sent out along with
  sense 08390001 instead of USSMSG10.
  

Problem conclusion

• In segment RSPACTLU of module ISTTSCTS the SSVSLUSS
  flag has been moved.
  

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:

  UW22614 OW17369

Modules/Macros

• ISTTSCTS
  

Fix information

• Fixed component name

  VTAM V4 MVS/ESA

• Fixed component ID

  569511701

Applicable component levels

• R301 PSY UW22614

     UP95/12/05 P F512

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.