Memorex LOCK - VERSION 2-24 Informações Técnicas descarregar pdf (Página 219)

100

101

DD Statement Overview

User Reference

Use Pursuant to Company Instructions

6-3

If you use a DD statement for a DTF that your program defines as a unit

record DTF (DTFCD or DTFPR), the ddname is the SYSnnn, where

nnn is the number specified in that DTF. A unit record DTF is generated

for COBOL programs when the SELECT statement contains an

assignment name that specifies the class UR.

Note:Note:

Do not use ddname in continuation statements or concatenation

statements.

Some DTF names have special meanings and are invalid for DD

statements. See “

DD Statement Names” in this chapter for additional

information.

parameter-expressions Can follow in any order, except where

noted otherwise. A

parameter-expression consists

of a parameter and its value(s) joined

by an equal sign (=). These expressions

must be separated from each other

using commas or blank spaces.

Numeric values are automatically

zero-filled on the left, if required,

eliminating the need to use leading

zeros.

Most DD parameters are

MVS-compatible. However, some

parameters are not compatible for:

 Tape and disk datasets (including

GDIUR datasets)

 Standard VSE system datasets

 SYSIPT data

 Dummy datasets

Not all MVS DD parameters are

supported by the BIM-EPIC DD

statement. BIM-EPIC ignores

unsupported and unrecognized

parameters and subparameters.

Supported parameters are discussed

later in this guide.

Parameter Definition

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