SYSIN DD Statement

SYSIN DD Statement

The SYSIN DD statement is used to provide the input source for programs or utilities in the JCL. It is typically used to provide control statements or data to the program that is being executed.

The SYSIN is used to specify the dataset name for the input source that contains the control statements or data. The dataset can be either a partitioned dataset or a sequential dataset.

SYSIN DD statement is also called as instream DD statement.

Syntax -

//SYSIN DD *[|DATA]
	data-input
/*

(or)

//SYSIN DD DSN=input.dataset.name,DISP=SHR
  • //SYSIN - is the DD (Data Definition) statement label, which is used to identify the data set definition.
  • DSN=input.dataset.name - specifies the name of the input data set. input.dataset.name should be replaced with the actual data set name.

Examples -

Scenario1 - SYSIN statement with a dataset.

//SYSIN  DD  DSN=input.data.set,DISP=SHR

Scenario2 - The below example shows how the SYSIN data is accepted in the program.

SYSIN

Run JCL - 

----+----1----+----2---+---3---+---4---+---5---+
//MTHUSERJ JOB (META007),'PAWAN Y',CLASS=A,MSGCLASS=L,MSGLEVEL=(1,1),
//             TIME=1440,NOTIFY=&SYSUID 
//*
//JOBLIB   DD  DSN=MTHUSER.MY.LOADLIB,DISP=SHR
//*
//STEP01   EXEC PGM=DATECONV
//STEPLIB  DD  DSN=MTHUSER.TEST.LOADLIB,DISP=SHR
//SYSIN    DD  *
20230101
/*
//SYSPRINT DD SYSOUT=*
//SYSOUT   DD SYSOUT=*

COBOL Program -

----+----1----+----2---+---3---+---4---+---5---+
       IDENTIFICATION DIVISION.
       PROGRAM-ID. DATECONV.
       ENVIRONMENT DIVISION.                                     
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01 WS-DT-INP       PIC 9(08).
       01 WS-DT-OP1       PIC 9(07).
       01 WS-DT-OP2       PIC 9(08).
       PROCEDURE DIVISION.
           ACCEPT  WS-DT-INP.
           COMPUTE WS-DT-OP1 = FUNCTION DAY-OF-INTEGER (FUNCTION 
                    INTEGER-OF-DATE (WS-DT-INP) - 1)
           COMPUTE WS-DT-OP2 = FUNCTION DATE-OF-INTEGER (FUNCTION  
                 INTEGER-OF-DATE (WS-DT-INP) - 1)
           DISPLAY 'DATE OUTPUT1      : ' WS-DT-OP1. 
           DISPLAY 'DATE OUTPUT2      : ' WS-DT-OP2. 
           STOP RUN.