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MAINFRAME - TIP OF THE DAY : When you specified V for RECFM parameter, LRECL value is largest record in the file plus 4 bytes. These four bytes contain the actual length of each variable length record in the file

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Control flow from one STEP to another

 
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pkaushi
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PostPosted: Tue Feb 07, 2006 9:51 am    Post subject: Control flow from one STEP to another Reply with quote

Hi,

I have a query...

Think of a cobol program which generates output file say file A. Now the jcl has two steps say STEP1 and STEP2. STEP1 executes the COBOL program.

Now whenever the program Writes some records into fileA only then step2 should execute and if nothing is written to the output file (Think of ity as a dummy O/P) being created then program should terminate.

How do I handle the above case in a JCL.....
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prasad
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PostPosted: Tue Feb 07, 2006 10:30 am    Post subject: use RETURN-CODE in COBOL program Reply with quote

Hi pkaushi,

Use RETURN-CODE in cobol program. At end of the program,
if no record written to output file, move 7 to RETURN-CODE.
You can move any number to RETURN-CODE.

Code:

    IF OUT-RECORD-CNT = 0
        MOVE 7  TO RETURN-CODE
    END-IF
   


Here RETURN-CODE is predefined cobol variable. whatever
value program move into this field, same value will be return by the
jcl step.


In jcl step2 include COND parameter like
Code:
   
   //STEP2 EXEC PGM=ABCD,COND=(0,LT)   
 


so that step2 wont get executed, If step1 returned any value other than zero.

Let me know if i am not answered your question fully.


Thanks,
Prasad
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pkaushi
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PostPosted: Tue Feb 07, 2006 10:59 am    Post subject: Reply with quote

thanks prasad its working Very Happy
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PostPosted: Thu Feb 16, 2006 5:56 pm    Post subject: Reply with quote

HI,

Adding to Prasad's Answer you can alsoe use following code to check file is empy or not

Code:
//STEP1000 EXEC PGM=IDCAMS                       
//SYSPRINT DD SYSOUT=*                           
//INDD1    DD DSN=File name,     
//            DISP=SHR                           
//SYSIN    DD *                                   
 PRINT INFILE(INDD1) COUNT(1)                     
//*                                               
//***** IF EMPTY FILE (RC = 4), DO NOT CONTINUE   
//*                                               
// IF (STEP1000.RC=0) THEN                       
//*                                               
//*-----------------------------------------------
//*-- 2ND PART :             
//*------------------------------------------


Hope this helps
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Rupesh
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Anuj Dhawan
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PostPosted: Wed Nov 26, 2008 4:18 am    Post subject: Reply with quote

Hi,

I had been using the second option over the years, IF THEN ELSE constuct are better than COND.
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ramana murthy
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PostPosted: Thu Jul 21, 2011 7:49 pm    Post subject: Reply with quote

There is also another way
in jcl

//STEP1 EXEC PGM=PRG1
//STEP2 EXEC PGM=PRG2, COND=(8,LE)


In PRG2, the program should be written in such a way that it check fileA for records .if not found it terminates.
the above JCL,STEP2 works only if STEP1 executes.

any queries mail me at: ramanamurthyt87@gmail.com Very Happy
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ramana murthy
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PostPosted: Thu Jul 21, 2011 7:49 pm    Post subject: Reply with quote

There is also another way
in jcl

//STEP1 EXEC PGM=PRG1
//STEP2 EXEC PGM=PRG2, COND=(8,LE)


In PRG2, the program should be written in such a way that it check fileA for records .if not found it terminates.
the above JCL,STEP2 works only if STEP1 executes.

any queries mail me at: ramanamurthyt87@gmail.com Very Happy
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dbzTHEdinosauer
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PostPosted: Thu Jul 21, 2011 10:31 pm    Post subject: Reply with quote

ramana murthy,
you made 8 posts today,
most of which were either inaccurate,
or simply useless as this one is. what you are saying makes no sense.

please make your posts accurate and useable.
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JCL, SQL and code in programs have an irritating habit of doing what you say,
not what you meant.
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Anuj Dhawan
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PostPosted: Sat Jul 30, 2011 2:17 pm    Post subject: Reply with quote

I agree with Dick and also, why do you post your e-mail ID all the times?
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