PH69690: MAP COULD NOT COMPLETE (17): DISK READ ERROR RUNNING ON Z/OS USS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• This issue can occur when running IBM Sterling Transformation
  Extender (ITX) Command Server on the z/OS USS platform, reading
  an input file that is greater than 2GB in size.
  
  In the dtxconn.log file, a message similar to the below may be
  seen:
  
  DTXLN4136E - Thu Dec 18 08:25:56 2025 - tid:429252608 inst: 1 -
  I/O ERROR : : I/O Read - MPI Stream Error (/scm/builds/10.1.2.1
  /source/64/txenv/mercunix//api/mercio.c:4001)
  DTXLN4136E - Thu Dec 18 08:25:56 2025 - tid:429252608 inst: 1 -
  I/O ERROR : FUNC:GetDataPtr DISK READ ERROR Asked:3815031600
  Got:-1 bytes (./s_paging.c:2049)
  

Local fix

• ITXCQ - ITX00063423
  GK / PB
  No known workaround
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of Sterling Transformation         *
  *                 Extender v10.1.2                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: MAP COULD NOT COMPLETE (17):            *
  *                      DISK READ ERROR RUNNING                 *
  *                      ON Z/OS USS                             *
  ****************************************************************
  * RECOMMENDATION: Apply this APAR maintenance.                 *
  ****************************************************************
  This issue can occur when running IBM Sterling Transformation
  Extender (ITX) Command Server on the z/OS USS platform, reading
  an input file that is greater than 2GB in size.
  
  In the dtxconn.log file, a message similar to the below may be
  seen:
  
  DTXLN4136E - Thu Dec 18 08:25:56 2025 - tid:429252608 inst: 1 -
  I/O ERROR : : I/O Read - MPI Stream Error (/scm/builds/10.1.2.1
  /source/64/txenv/mercunix//api/mercio.c:4001)
  DTXLN4136E - Thu Dec 18 08:25:56 2025 - tid:429252608 inst: 1 -
  I/O ERROR : FUNC:GetDataPtr DISK READ ERROR Asked:3815031600
  Got:-1 bytes (./s_paging.c:2049)
  

Problem conclusion

• ---
  

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:

  PH69966 UO06759

Modules/Macros

• DTX4C8Q  DTX55DAX DTX55ING DTX55INN DTX55UCN DTX55UCX DTXA12KL
  DTXA12XD DTXCPAXB DTXLC22  DTXLQ22  DTXMAPLD
  

Fix information

• Fixed component name

  TX Z/OS

• Fixed component ID

  5655RA100

Applicable component levels

• RA12 PSY UO06759

     UP26/02/11 P F602

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.