COBOL_Training_Class-2.ppsx

7/27/2019 COBOL_Training_Class-2.ppsx

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IBM-Mainframes

COBOL CLASS-2


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So far we have Covered

Background and History of COBOL.

Structure of COBOL Program.

COBOL Program Organization (Division).

ID!"I#IC$"IO! DI%ISIO!

!%I&O!'!" DI%ISIO!

D$"$ DI%ISIO!

P&OCD& DI%ISIO!

COBOL LayoutCOBOL Code S*eet

'y #irst COBOL Program


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Preparation for COBOL Programs

"*ree im+ortant ste+s,

1. Write a COBOL Program.

2. Compile the Program.

3. Execute the Program..Com+i-ation, Process of converting from source code to

o/ect code

.For every COBOL program we nee to compile u!ing "CL.

#he compile "CL will $e !tanar %or the all the program&!.

."u!t we nee to copy the compile "CL %rom the exi!ting

'ata!et an ma(e the nece!!ary change!.


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Preparation for COBOL Program


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JCLJob contro Lang!age


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Short Introd!ction on JCL

JCL is used to compile and execute batch programs.

To write any JCL we require

"# JOB Statement#

2# $%$C Statement#

'' Statement#

(# )! Statement#

JOB* Execution of one or more programs is knows as a job


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JCL Statement+s

0OBS"$"'!", "OB !tatement i! u!e to ienti%y the "OB )ame

an "OB&! relate parameter! *accounting in%o+ u!ername+ cla!!+ noti%y

etc,.

-yntax

//"OB)0E"OB 0CC#)FO+-E4)0E+CL0--+)O#F5..

$ccountingInformation, I! mainly u!e %or $illing purpo!e.

sername, I! u!e to ienti%y who ha! written the "CL.

C-ass, I! u!e to provie re!ource con!traint to the 6o$.

!otify, ! u!e to ecie to which S&1IDthe "OB ha! to $e noti%y

a%ter !ucce!!%ul or un!ucce!!%ul compilation


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JCL Statement+s contd##

2C Statement,#hi! !tatement i! u!e to ienti%y the !tep name an

program name. 0 maximum we can write 277 !tatement! in a !ingle

"OB.

Synta3,

S"P4 2CP5'6P&O5 !$'

DDstatement, ! u!e to !peci%y the input an output location re8uire

%or a program execution/compilation.

Synta3, DD!$' DDP$&$'"&S


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JCL Statement+s contd##

DD name7s

S"PLIB, #hi! i! u!e to ienti%y the path o% the loa moule

*L language coe,.

S8SP&I!", #hi! i! u!e to print the error me!!age! in the !pool.

S8SO", % the program i! !ucce!!%ul the o/p will $e route to

-5-O# in the !pool.

it i! u!e to inicate the en o% the "CL.


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JCL Coding Sheet

49:111111111COL'! !'B&S111111;9;:111111111111111111 9>:? 99COE)#-99

Every !tatement in "CL are precee $y

)ame %iel "OB )ame+ -tep )ame an '' name

-tatement Fiel! "OB+ E:EC+ '' -tatement

Comment #o ma(e any comment in the "CL program we nee

to coe @

En o% "CL i! !peci%ie $y)ull !tatementi.e.+


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Sampe $,ec!tion JCL

0OB!$' 0OB 49:>7S$H$S&$7>CL$SS6$>!O"I#86AS8SID

S"P4 2C P5'6DISP5'

S"PLIB DD DS!6S&ID.!$'.LO$DLIB>DISP6SH&

S8SP&I!" DD S8SO"6@

S8SO" DD S8SO"6@


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han. /o!

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COBOL_Training_Class-2.ppsx