StorageTek Host Software Component 6.0, Руководство системного программиста

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Chapter 4. Utility Functions 177
1st ed., 6/30/04 - 312579601
JCL and Control Statements
Although the ACS exec can generate a template job file, the utility control statements (and
possibly the SCP JCL) must be modified by the user. To do this the user should have some
understanding of the format and function of these statements.
SCP Batch Job Control Language (JCL)
The function of the SCP Job Control Language is to provide enough information to the
SCP to execute the requested utility within the SCP batch job environment. It defines the
name of the job to be executed, the name of program module to execute, the specific files
to be used by the program, and perhaps some miscellaneous parameters.
The suggested file type is SLKJCL, and the file must consist of fixed, 80 column
card-image records, composed of the following job control statements:
/JOB jobname pgmname
/PARM parms ...
/COMM comments ...
/FILE fileopts ...
Note: With the exception of the /PARM statement values, all JCL statements are case
insensitive.
/JOB Statement
The /JOB statement must be the first statement in a file of Job Control statements known
as a job stream or JCL. It defines the name of the job (jobname), and the name of the
program module to be executed (pgmname). Typically this is SLUADMIN.
There must be one and only one /JOB statement per job stream.
jobname
the name of the job. It must be from 1 to 8 alphanumeric characters beginning with
an alphabetic character.
pgmname
the name of the program to be executed. It must be from 1 to 8 alphanumeric
characters beginning with an alpha. Program must be a module in one of the
SCP/HSC LOADLIBs.
/JOB jobname pgmname