March 2007
Beginner
526 pages
13h 53m
English
book
Introduction to the New Mainframe: z/VSE Basics
by Wolfgang Bosch, Hans Joachim Ebert, Helmut Hellner, G. M. (Jerry) Johnston, Wilhelm Mild, Ingolf Salm, Joerg Schmidbauer, Martin Walbruehl, Mike Ebbers
Content preview from Introduction to the New Mainframe: z/VSE Basics
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Chapter 6. Using JCL 167
6.3.4 EXTENT statement parameters
The EXTENT statement defines each area, or extent, of a disk or diskette. One
or more EXTENT statements must directly follow each DLBL statement (except
for VSAM files).
The following are samples of an EXTENT statement:
// EXTENT SYS001,,1,0,100,400
// EXTENT ,VOLUM1,1,0,100,400
Common operands found on the EXTENT statements are:
First operand Specifies the logical unit of the volume for which this
extent is effective. If this operand is omitted, the logical
unit of the preceding EXTENT statement, if any, is used. If
this operand is omitted on the first or only EXTENT
statement, the logical unit specified in the program is
assumed.
Second operand Specifies the volume serial number of ...
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