PK30817: DFHMN0001 AN ABEND (CODE 378/AKEB) HAS OCCURRED AT OFFSET X'0FEC' IN DFHMNSU

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Abend378 RC14 occurs when DFHMNSVC attempts to freemain the
  the 8-byte hash element associated with a WLM performance block.
  RC14 for the abend378 indicates either the key or the subpool
  specified on the freemain didn't match the associated getmain.
  .
  System trace shows that the 8-byte hash element is getmained by
  DFHMNSVC +x'9EE' in routine WLM_PB_CREATE. Key0 is specified on
  the getmain, and the subpool is 252 (or x'FC'). The failing
  freemain is from DFHMNSVC +x'AFC' in the WLM_PB_DELETE routine
  with key0, subpool 229 (or x'E5'). The failure occurs on the FO
  TCB.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 378/AKEB while using VSM          *
  *                      diagnostic trap IGVUNCOND               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An abend 378/AKEB can occur due to CICS freemaining an 8 byte
  hash element associated with a WLM performance block using
  a different storage subpool to that used on the getmain.
  There will normally be no abend as the freemain is a conditional
  freemain. This means that control is returned to the
  statement immediately following the freemain with an appropriate
  return code set.
  However if the VSM diagnostic trap: IGVUNCOND is activated using
  a DIAGxx member in SYS1.PARMLIB the conditional freemain
  becomes unconditional and z/OS will generate a 378/AKEB
  abend.
  
  Keywords: 378 S378 abendS378 abendAKEB
  

Problem conclusion

• DFHMNSVC has been altered to freemain the WLM hash element using
  the same subpool used on the getmain.
  

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:

  UK18931

Modules/Macros

•    DFHMNSVC
  

Fix information

• Fixed component name

  CICSTS 3.1 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK18931

     UP06/10/19 P F610

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.