PH64875: ABEND0C4 IFG019RA +X'17AC' BECAUSE DEB31UCB BIT IS ON . 25/01/17 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND0C4 IFG019RA +x'17AC' because DEB31UCB bit is on . PH61418
  applied
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All IMS V15 using access method OSAM with APAR PH61418 / PTF *
  * UI99219.                                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * After applying APARs PH58050/UI95909 and PH61418/UI99219,    *
  * IMS DLI address space terminates with ABENDS0C4 S0C4 from    *
  * the z/OS module IFG019RA when calling End of Volume while    *
  * opening an OSAM data set.                                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * INSTALL CORRECTIVE SERVICE FOR APAR/PTF.                     *
  ****************************************************************
  ABEND 0C4 occurs in z/OS module IFG019RA at offset x'17AC' when
  an OSAM database data set is being opened. This occurs because
  the UCB address in DEB +x'20', UCBA from the DEB, is loaded into
  register 2 as a 31 bit address when in fact a 24 bit address
  should have been used.
  The DEB31UCB flag is used to show that all UCB addresses are
  four bytes and the DEBXCAP flag is used to show that the UCB
  address in DEB was captured by open, close or end of volume.
  OSAM open, incorrectly set the DEB31UCB flag ON while the
  DEBXCAP was ON. This lead to the ABENDS0C4. APAR PH64875 is a PE
  to PH61418/UI99219 which was in turn a PE to PH58050/UI95909.
  Also, setting NON_VSAM_XTIOT=YES will avoid the ABENDS0C4 after
  applying PH61418.
  

Problem conclusion

• DFSAOSF0 was updated after label OPEN910 to avoid setting
  DEB31UCB flag ON in a scenario where the UCB address has been
  captured by OPEN, CLOSE, or END OF VOLUME and before we call the
  EOV exit IFG019RA in DFSAOSF0 at label OPEN925.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UO03007

Modules/Macros

• DFSAOSF0
  

Fix information

• Fixed component name

  IMS V15

• Fixed component ID

  5635A0600

Applicable component levels

• R500 PSY UO03007

     UP25/05/03 I 1000 ­

Fix is available

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