PH56193: REINSTATE THE FEATURE TOGGLE COM.IBM.CICS.DS.FREEUSSPROCESSES AT CICS 6.1.

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• APAR raised to reinstate the feature toggle
  com.ibm.cics.ds.freeussprocesses for CICS 6.1.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Since CICS TS 5.5 USS process release   *
  *                      behaviour has changed for L8 and L9     *
  *                      TCBs.                                   *
  ****************************************************************
  Usage of IP CICS Sockets can result in additional CPU usage from
  CICS TS 5.5. This is as a result of a change in CICS TS 5.5 to
  make a BPX1MPC call when returning an L8/L9 TCB to the pool at
  end of task. This ensures that USS processes do not persist
  longer than is necessary.
  This APAR introduces a feature toggle to allow the behaviour to
  be reverted to that of CICS TS 5.4 and before, under guidance of
  IBM Support.
  

Problem conclusion

• New feature toggle 'com.ibm.cics.ds.freeussprocesses' has been
  introduced to allow this USS process release logic to be altered
  under the guidance of IBM Support.
  The Knowledge Center for CICS TS 6.1 will be updated to
  document this new feature toggle.
  

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:

  UI93270

Modules/Macros

• DFHDSDM
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R400 PSY UI93270

     UP23/08/23 P F308  

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.