PK88367: ISPF INTERFACE DOESN'T TERMINATE SESSION ON DUET SYSTEM SWITCH.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The ISPF interface doesn't terminate session on DB2 Utilities
  Enhancement Tool system switch.
  There are two issues concerning session management and
  coordination between ISPF and batch clients and the DUET started
  task server.
  
  1. Abnormal termination of a client address space does not
  provide for a session termination call to be sent to the DUET
  server. This may result in an ABEND in the server if the DUET
  server attempts to pass data back to the terminated client
  address space. DUET provides recovery in this case but avoiding
  this situation would be preferable. At the least, the session
  control block that represented the terminated client is still
  allocated and marked active in the server.
  
  2. DUET provides a system MODIFY command interface to the server
  that allows an operator to terminate an existing session. This
  will clean up the session control block in the server but does
  not notify the ISFP or batch session address space of this
  event. This can result in ABENDs or "hang" situations in DUET
  clients.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of DB2 Utilities Enhancement Tool.     *
  ****************************************************************
  * PROBLEM DESCRIPTION: The ISPF interface doesn't terminate    *
  *                      session on DB2 Utilities Enhancement    *
  *                      Tool system switch. There are two       *
  *                      issues concerning session management    *
  *                      and coordination between ISPF and       *
  *                      batch clients and the DUET started      *
  *                      task server.                            *
  *                      1. Abnormal termination of a client     *
  *                      address space does not provide for a    *
  *                      session termination call to be sent to  *
  *                      the DUET server. This may result in     *
  *                      an ABEND in the server if the DUET      *
  *                      server attempts to pass data back to    *
  *                      the terminated client address space.    *
  *                      DUET provides recovery in this case     *
  *                      but avoiding this situation would be    *
  *                      preferable. At the least, the session   *
  *                      control block that represented the      *
  *                      terminated client is still allocated    *
  *                      and marked active in the server.        *
  *                      2. DUET provides a system MODIFY        *
  *                      command interface to the server that    *
  *                      allows an operator to terminate an      *
  *                      existing session. This will clean up    *
  *                      the session control block in the        *
  *                      server but does not notify the ISFP     *
  *                      or batch session address space of this  *
  *                      event. This can result in ABENDs or     *
  *                      "hang" situations in DUET clients.      *
  ****************************************************************
  * RECOMMENDATION: APPLY the PTF.                               *
  ****************************************************************
  Code has been changed to correct this condition.
  

Problem conclusion

• APPLY the PTF.
  

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:

  UK48808

Modules/Macros

•    ABPBMAIN ABPBREPT ABPFADM0 ABPFADM1 ABPFADM2
  ABPFADM3 ABPFAPI  ABPFCTHD ABPFGABP ABPFGDB2 ABPFGSYS ABPFIAPI
  ABPFIPCV ABPFMAIN ABPFMSGL ABPFMSG1 ABPFOBJR ABPFPRF0 ABPFPRF1
  ABPFPRF2 ABPFPRF3 ABPFRELR ABPFSABP ABPFSDB2 ABPFSESS ABPFSKL
  ABPFSSEC ABPFSSYS ABPFTAPI ABPFTHDD ABPFTHDL ABPFTHD1 ABPFTHD2
  ABPFTHD3 ABPFTHD4 ABPFTHD5 ABPGAPIS ABPISPF  ABPMAINT ABPMSGEN
  ABPPANEL ABPPROC  ABPRUSQL ABPSCSRV ABPSMEPL ABPSRSLT ABPSTCMD
  ABPSTDB2 ABPSTSES ABPSUSQL ABPUFSPC ABPUGSKM ABPUMAIN ABP04
  

Fix information

• Fixed component name

  DB2 UTIL ENHANC

• Fixed component ID

  5655T5800

Applicable component levels

• R210 PSY UK48808

     UP09/08/07 P F908

Fix is available

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