IBM OS/390 manual Additional DFSORT/VSE Migration Considerations

19.3 Additional DFSORT/VSE Migration Considerations

DFSORT/VSE is based on and replaces Sort/Merge. It offers additional features not available in Sort/Merge. All of the migration considerations discussed previously for Sort/Merge apply to DFSORT/VSE as well. Migration considerations for additional features of DFSORT/VSE are discussed below.

19.3.1 Control Statements

OPTION: DFSORT/VSE has additional OPTION statement operands not found in Sort/Merge. Here are the actions, if any, you should consider taking for each such OPTION operand:

∙DSPSIZE: Can be used with no changes. However, since the OS/390 environment is considerably different from the VSE environment, you should determine if the DSPSIZE value specified is still appropriate as the maximum amount of data space to be used for dataspace sorting.

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EQUALS: Can be used with no changes.

NOEQUALS: Can be used with no changes.

GVSIZE: Must be removed. DFSORT terminates if this operand is specified. GVSIZE has no meaning for DFSORT since OS/390 does not support GETVIS areas. By default, DFSORT uses virtual storage (above and below 16M virtual), dataspace sorting, hipersorting and work data sets, as appropriate.

∙GVSRANY: Must be removed. DFSORT terminates if this operand is specified. GVSRANY has no meaning for DFSORT since OS/390 does not support GETVIS areas.

∙GVSRLOW: Must be removed. DFSORT terminates if this operand is specified. GVSRLOW has no meaning for DFSORT since OS/390 does not support GETVIS areas.

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LOCALE: Can be used with no changes.

SKIPREC: Can be used with no changes.

STOPAFT: Can be used with no changes.

STXIT: Must be removed. DFSORT terminates if this operand is specified. By default, DFSORT uses an ESTAE routine for abend recovery.

∙NOSTXIT: Must be removed. DFSORT terminates if this operand is specified.

Use the NOESTAE operand of the DEBUG control statement to suppress DFSORT′s ESTAE routine for abend recovery.

∙WRKSEC: Must be removed. DFSORT terminates if this operand is specified. By default, DFSORT uses automatic secondary allocation for temporary JCL SORTWKnn data sets for which a secondary allocation amount is not specified.

∙NOWRKSEC: Can be used with no changes. However, since NOWRKSEC applies to SAM ESDS work files for Sort/Merge, but to temporary work files for DFSORT, you should determine if this operand should be kept or removed.

∙Y2PAST: Can be used with no changes.

OUTREC: DFSORT/VSE has additional OUTREC statement operands not found in Sort/Merge. Here are the actions, if any, you should consider taking for each such OUTREC operand:

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