PH52408: CDFS TRANSACTION ATTACHED FOR EVERY DEFERRED START

APAR status

• Closed as program error.

Error description

• For every deferred START request a CDFS transaction is attached.
  This happens also in non-routing regions where it should be
  unnecessary. This could lead to MAXTASK condition in CICS.
  This is a change in behaviour at CICS TS 5.6
  

Local fix

• Define transactions with DYNAMIC=NO on CSD file or use the
  override feature to apply DYNAMIC=NO to CICS user transactions.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: CDFS transaction is being attached for  *
  *                      every non-terminal-related deferred     *
  *                      START in non-routing regions leading to *
  *                      MAXTASK condition in CICS.              *
  ****************************************************************
  If the user transaction to be started is eligible for dynamic
  routing, system transaction CDFS will run and start the user
  transaction at the time specified by INTERVAL, AFTER, AT or TIME
  option of EXEC CICS START command.
  CICS TS 5.5 onwards in order for a non-terminal-related START
  request to be dynamically routed the target transaction needed
  to be defined as DYNAMIC(YES) with a routing program, specified
  by either DSRTPGM or DTRPGM.
  The value of system initialization parameter DSRTPGM supplies
  the name of a routing program.
  The transaction defined as DYNAMIC(YES) with DSRTPGM=NONE
  indicates that no routing is expected. However, the CDFS
  transaction is still being attached for all non-terminal-related
  EXEC CICS START requests that specified an INTERVAL and may lead
  to hitting MAXTASK condition in CICS region.
  

Problem conclusion

• CICS has been changed so that the CDFS transaction is only
  attached when a routing program has been defined and the
  transaction is defined as DYNAMIC(YES).
  

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:

  PH54679 UI92017

Modules/Macros

• DFHEIIC
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R300 PSY UI92017

     UP23/05/31 P F305