Subparameter definition
- valueK
- Specifies the required storage in kilobytes (1 kilobyte = 1024 bytes). The value is 1 through 7 decimal numbers, from 1 through 2096128. Code a multiple of 4. For example, code REGION=68K. If the value you code is not a multiple of 4, the system will round it up to the next multiple of 4.
- valueM
- Specifies the required storage in megabytes (1 megabyte = 1024 kilobytes). The value is 1 through 4 decimal numbers, from 1 through 2047. For example, REGION=3M.
- value=0M or 0K
- A value equal to 0K or 0M gives the step all the storage available
below the 2 GB bar. This includes below and above 16 megabytes. The
resulting size of the region below and above 16 megabytes depends
on system options and what system software is installed. When REGION=0K/0M
is specified, the MEMLIMIT value is set to NOLIMIT.Note: This may cause storage problems. See the Considerations When Using the REGION parameter section for more information.
If your installation does not change the IBM-supplied default limits
in the IEALIMIT or IEFUSI exit routine modules, then specifying various
values for the region size has the following results:
- A value equal to 0K or 0M — gives the job all the storage
available below and above 16 megabytes. The resulting size of the
region below and above 16 megabytes is installation-dependent. When REGION=0K/0M is specified, the MEMLIMIT is set
to NOLIMIT.Note: This may cause storage problems. See the Considerations When Using the REGION parameter section for more information.
- A value greater than 0K or 0M and less than or equal to 16,384K or 16M — establishes the size of the private area below 16 megabytes. If the region size specified is not available below 16 megabytes, the job step abnormally ends with an ABEND822. The extended region size is the default value of 32 megabytes.
- A value greater than 16,384K or 16M and less than or equal to 32,768K or 32M — gives the job all the storage available below 16 megabytes. The resulting size of the region below 16 megabytes is installation-dependent. The extended region size is the default value of 32 megabytes.
- A value greater than 32,768K or 32M and less than or equal to 2,096,128K or 2047M — gives the job all the storage available below 16 megabytes. The resulting size of the region below 16 megabytes is installation-dependent. The extended region size is the specified value. If the region size specified is not available above 16 megabytes, the job step receives any storage available above 16 megabytes, up to the requested amount, and the resulting size of the region above 16 megabytes is installation-dependent.