PH59894: CSQU145I SCOPY STATEMENT FAILED

APAR status

• Closed as program error.

Error description

• CSQUTIL SCOPY failed with these messages:
  
  CSQU145I  SCOPY statement failed
  CSQU143I  1 SCOPY statements attempted
  CSQU144I  0  statements executed successfully
  CSQU147I CSQUTIL Utility terminated, return code=8
  
  No abend happened.
  
  The problem is an incorrect conversion from a page number into
  an RBA when getting a record from the page set in CSQUIRH8. The
  problem results in the incorrect page being returned for page
  numbers greater than 0x000FFFFF. The problem affects both the
  CSQUTIL SCOPY and CSQUZAP CHKISQE functions.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 2 Modification 0 and Release 3       *
  *                 Modification 0.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: The CSQUTIL SCOPY function reads        *
  *                      messages from a page set to copy them   *
  *                      into an output data set. This requires  *
  *                      converting a page number into an RBA. A *
  *                      bug in this calculation results in the  *
  *                      RBA being calculated incorrectly for    *
  *                      page numbers greater than 0x000FFFFF.   *
  *                      This results in the SCOPY operation     *
  *                      failing and message CSQU145I being      *
  *                      issued and the CSQUTIL job step ending  *
  *                      with RC=0008.                           *
  ****************************************************************
  The logic which converts a page number into an RBA uses a 32-bit
  multiplication instruction. This results in RBA greater than
  0xFFFFFFFF being truncated. This RBA corresponds to pages with a
  page number greater than 0x00FFFFFF. The incorrect RBA
  calculation will result in the wrong page being read from the
  page set. This will likely result in the CSQUTIL SCOPY operation
  failing, but could also result in the wrong message being copied
  to the output data set.
  

Problem conclusion

• The CSQUTIL SCOPY code which converts a page number into an RBA
  has been corrected.
  

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:

  UI96235 UI96236

Modules/Macros

• CSQUIRH8
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels