面试题与答案

A symbolic parameter in JCL is a placeholder used to represent a value that will be substituted at runtime. It is defined using a symbolic parameter or symbol.

Example:

//SYSIN DD *,VAR1=VALUE
DELETE DATASET('&VAR1')

Multiple conditions for the COND parameter can be specified using logical operators such as AND, OR, and NOT.

Example:

//STEP2 EXEC PGM=ABC,COND=((4,LT),(2,EQ,3))

To override a cataloged procedure, you can use the PROC parameter in the EXEC statement, providing the necessary parameter values.

Example:

//STEP1 EXEC PROC=MYPROC,REGION=2M

The COND parameter value 'EVEN' is used to conditionally execute a job step only if the return code of the previous step is an even number.

Example:

//STEP3 EXEC PGM=DEF,COND=(EVEN)

The SPACE parameter is used to specify the amount of space allocated for a dataset. It includes primary, secondary, and directory space values.

Example:

//OUTPUT DD DSN=OUT.FILE,SPACE=(CYL,(10,5),RLSE)