OA65023: ABEND0C4 IN HZRPCONT WHEN IT CHECKING THROUGHT THE ISGQUERY ANSWER AREA. ISGYQUAARSNEXT CONTAINS NON-ZERO INCORRECTLY

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• HZRPCONT invoked ISGQUERY to collect ENQ information and after
  few iteration with RC04 RSN 405, it finally received the RC00.
  Upon checking through the answer area returned, it tried to
  advance to next entry by using the ISGYQUAARsNext. But the
  content in the field was non-zero when such offset was actually
  the offset as the ISGYQUAAHdrTotalLen in the buffer. (ie Next
  field with xx_00A003D0 and the TotalLen was 000003D0 ).
  ISGYQUAARsNext field in the last valid record should contain
  zero as no further record followed.
  ABNED0C4 occurred in HZRPCONT as the NEXT field in the first
  invalid record (ie the one beyond the last valid record)
  contains unpredicted data and not valid to be treated as
  beginning of next record.
  The ISGYQUAARsNext field in the last VALID record should be set
  to zero instead.
  
  ANALYSIS:
  Locate ISGYQUAA block in storage.
  +10 in ISGYQUAA pointing to the first valid record. +1C contains
  the actual length of this return.
  +8 in each record is the NEXT field.
  When the NEXT field in the record pointing beyond the location
  of the TotalLen, then this is the problem described in this
  APAR.
  
  VERIFICATION STEPS:
  checking the dump to locate the actual return area from
  ISGQUERY. It should have the ISGYQUAA as the blockid. +10 in
  this area contains the first valid record. +1C contains the
  TotalLen within this buffer. Within each record , +8 within the
  record is the NEXT field. When the Next field pointing to
  storage beyond the TotalLen, then this is the error described by
  this APAR.
  

Local fix

• BYPASS/CIRCUMVENTION:
  No local fix
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of HBB77C0 and up, PTFS provided for                   *
  * HBB77D0 and HBB77E0                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * ABEND0C4 in HZRPCONT while processing                        *
  * ISGQUERY response.                                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  ISGQUERY was invoked by HZRPCONT, the response area indicated
  the correct number of entries returned, however the last entry
  had a non null ISGYQUAARsNext. ISGQUERY processing did not
  clear the next pointer when backing out an element due to a
  concurrent DEQ. When HZRPCONT traversed the chain
  the incorrect ISGYQUAARsNext address caused the ABEND0C4.
  

Problem conclusion

• ISGQUERY code is corrected to properly set the
  ISGYQUAARsNext for the last entry.
  

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:

  UJ94040 UJ94041

Modules/Macros

• ISGQQSC
  

Fix information

• Fixed component name

  GRS

• Fixed component ID

  5752SCSDS

Applicable component levels

• R7D0 PSY UJ94041

     UP23/11/15 P F311

• R7E0 PSY UJ94040

     UP23/11/15 P F311

Fix is available

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