PK60138: USE OF REGION=0M IN JOBCARD FOR CACPOST SAMPLE JCL RESULTS IN FULL ACCESS OF CACCATIN JOBSTEP TO AVAILABLE STORAGE

APAR status

• Closed as documentation error.

Error description

• When JCL is run to execute the PGM=CACCATUT, referenced in the
  sample JCL CACPOST, and the parameter REGION=0M is included in
  the jobcard, the following values are displayed in the joblog:
  IEF374I STEP/CACCATIN/STOP  2007317.1411 CPU    0MIN 02.35SEC
  SRB 0MIN 00.25SEC VIRT   128K SYS   308K EXT 1885572K SYS
  11844K
  Note the EXT value is 1885572K
  .
  If no REGION value is included in the jobcard, the default usage
  will display as:
  IEF374I STEP/CACCATIN/STOP  2007323.0942 CPU    0MIN 00.69SEC
  SRB 0MIN 00.18  VIRT   128K SYS   368K EXT   32720K SYS
   10348K
  Where EXT is a much lower value of 32720K
  .
  If a REGION parameter is used, we recommend that a value other
  than 0M is specified.  A value of 0M grants the job access to
  all available storage, dependent on any site specific limits
  set.  For additional information on the JOB REGION parameter,
  refer to the MVS JCL Reference manual.  In addition, a REGION
  parameter has been added to the CACPOST SAMPLE JCL in the
  EXEC DD statement.  The updated sample can be obtained from
  APAR PK59020.
  

Local fix

• If a REGION parameter must be specified in the JCL jobcard,
  please specify a value other than 0M.  See MVS JCL Reference for
  additional considerations regarding the JOB REGION parameter.
  Obtain fix for APAR PK59020 where CACPOST sample is updated
  with a REGION value on the EXEC statement.  Note that a
  REGION parameter in the JOBCARD will override a REGION
  value on the EXEC statement.
  

Problem summary

• Use of REGION=0M in JCL jobcard grants the job
  full access to available storage in address space.
  

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:

Fix information

Applicable component levels