PM43241: IMS ABENDING AN L8 TCB BYPASSES USE COUNT DECREMENTING THEREBY PREVENTING CICS SHUTDOWN

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Defect 34532
  When an application accessing an IMS DBCTL database encounters
  an abend and the L8 TCB is abended the counts of tasks using
  DBCTL
  is not decremented.
  This causes any request to disconnect from IMS to suspend
  indefinitely, including a CICS shutdown request.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users when connected to IMS V12 or       *
  *                 higher                                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: CICS may not shutdown when using        *
  *                      IMS V12 or higher.                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When an application accessing an IMS DBCTL database encounters
  an abend and the L8 TCB is abended the count of tasks using
  DBCTL is not decremented. This causes any request to disconnect
  from IMS to suspend indefinitely, including a CICS shutdown
  request.
  

Problem conclusion

• DFHDBAT has been changed to ensure its environment
  has been correctly recovered following an abend.
  
  The CICS Transaction Server V4.2 Trace Entries (SC34-7187-00)
  has been updated to add a new trace entry to the table of
  DBCTL and DL/I trace points
  
  Point ID     Module     Lvl     Type       Data
  AP 0318     DFHDBAT     Exc    Recovery    1 Local Work Area
                                             2 Global Work Area
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK73519

Modules/Macros

•    DFHAPTR6 DFHDBAT  DFHERM
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R700 PSY UK73519

     UP11/11/15 P F111

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.