OA42454: ABEND 0C4 IN XPEDITER AFTER EXEC CICS RELEASE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The 0C4 is at offset x'2200' in program DBUGDBXX, the abending
  instruction is BF6F 2074 and Register 2 contains a bad address.
  Prior to the abend, DBUGDBXX running in AMODE(64) loaded
  Register 2 with program DBUG CPE address 00000048_40B74808
  (64bit for CICS TS 5.1), and then issued an EXEC CICS RELEASE
  to release DBUG. On return from the RELEASE command, DBUGDBXX
  attempted to get CPE_CURRENT_USERS (R2 + 74) to check if the
  current users count was zero. But, the top- half of R2 was
  somehow cleared, so a bad address in R2 was referenced causing
  the 0C4.
  

Local fix

• apply PTF when available.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All OMEGAMON XE for CICS on z/OS users.      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Unpredictable results, most likely a    *
  *                      S0C4 abend, when an application running *
  *                      on CICS/TS 5.1 makes an EXEC CICS call  *
  *                      in AMODE31 with General Purpose         *
  *                      Register 2 containing a 64-bit address. *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When the conditions listed above are met, OMEGAMON may
  incorrectly clear the top-half of register 2 to 0; when the
  application gets control back after the EXEC CICS call any use
  of that register in AMODE64 will not address the expected
  memory.
  

Problem conclusion

• OMEGAMON was changed to not incorrectly clear the top-half of
  register 2 to 0.
  
  After installing this PTF and reloading the RTEs where the
  CICS regions are running, you must recycle all affected CICS
  regions.
  
  Additional search keywords:
  XPOF Xpediter/CICS
  

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:

  UA69774 UA69775

Modules/Macros

•    KC5EICBA KC5EICCA KOCBSP0A KOCBSTBA KOCBSTCA
  KOCDINBA KOCDINCA KOCEICBA KOCEICCA KOCLUEBA KOCLUECA KOCRUEBA
  KOCRUECA KOCRYCBA KOCRYCCA KOCSBMBA KOCSBMCA KOCXECBA KOCXECCA
  KOCXENBA KOCXENCA
  

Fix information

• Fixed component name

  OMEG XE CICS Z/

• Fixed component ID

  5698A5800

Applicable component levels

• R420 PSY UA69774

     UP13/08/01 P F307

• R510 PSY UA69775

     UP13/08/01 P F307

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.