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z/OS MVS JCL Intermediate

© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed.

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age 2 o% &'

()I* Introd+ing $roed+re"

-hat i" a $roed+re

Cata!oged and InStream $roed+re"

Identi%ying InStream $roed+re"

Cata!oging $roed+re"

Otaining a $roed+re Li"ting

In#o1ing a $roed+re

*opi"

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JCL programmer" o%ten +"e proed+re" preoded JCL5 to a#oid repetiti#e oding o% in%ormation and a" a

time "a#ing tehni6+e.

*hi" +nit de"rie" ata!oged and in"tream proed+re" and their ad#antage". *he +nit %+rther e7p!ain" ho8

to identi%y a proed+re de%inition in the 9o "tream. *he +nit end" y di"+""ing ho8 to e7e+te a proed+re.

Unit Introduction

Unit: Introducing Procedures

Introd+tion

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t the end o% thi" +nit, yo+ 8i!! e a!e to

• :e%ine the term" proed+re, ata!oged proed+re and

in"tream proed+re

• Spei%y 8here a proed+re an e !oated

• Spei%y 8hen to +"e an in"tream proed+re and 8hen

to +"e a ata!oged proed+re

• Identi%y the JCL "tatement" that de%ine an in"tream

proed+re

• Code the JCL to otain a proed+re !i"ting

• Code a "tatement to in#o1e a proed+re

Unit Objectives


Introd+tion

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ; o% &'


-hat i" a $roed+re





In#o1ing a $roed+re

*opi"

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age & o% &'

t the end o% thi" topi, yo+ 8i!! e a!e to

• :e%ine a proed+re

• :e"rie the ad#antage" o% a proed+re

Topic Objectives


Introd+tion

Topic: What is a Procedure?

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age < o% &'

What is a procedure?

proed+re i" a preoded "et o% JCL "tatement" 8ith a +ni6+e name.

JCL "tatement" that are +"ed y "e#era! +"er" or +"ed repeated!y are p!aed in a proed+re. ("e o%

proed+re" not on!y "a#e" time +t a!"o a#oid" error".

Procedure


Conept"


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age = o% &'

How does a procedure work?

proed+re i" ro+ght into a 9o "tream at the

appropriate p!ae to per%orm it" %+ntion 8ith an

>?>C "tatement that re%er" to it y it" name.

In the e7amp!e "ho8n, a proed+re a!!ed

$@OC i" in#o1ed.

//JSTEP EXEC PROCA

*hi" !ine e7e+te" the proed+re $@OC.

Using Procedures


Contin+edA

Conept"


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age o% &'

Mo"t in"ta!!ation" ha#e preoded proed+re" that ena!e yo+ to per%orm ompi!e", !in1 edit" and te"t"

6+i1!y

and ea"i!y.

*o +"e preoded proed+re", the ode m+"t ontain the %o!!o8ing "tatement"

• "ing!e >?>C "tatement that in#o1e" the proed+re

• :: "tatement to identi%y the "o+re program in a"e o% ompi!e"

• :: "tatement" %or the te"t data.

Using Procedures (cont’d)


Conept"


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age '0 o% &'

*he e7amp!e "ho8n on the right "ho8" a 9o

"tream to in#o1e a proed+re named COB(CL

that may e a#ai!a!e to he!p ompi!e, !in1 edit,

and te"t COBOL program.

Procedure !n "#a$p%e


//STEP1 EXEC COBUCLG

//COB.SYSIN DD *

(source pror

.

.

//GO.SYSIN DD *

(!es! "#!#$

.

.

/*

>?>C "tatement that

In#o1e" the proed+re

:: "tatement that

Identi%ie" "o+re program

>?>C "tatement that

Identi%ie" te"t data

Conept"


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age '' o% &'

!dvantages o& a Procedure

d#antage" o% +"ing a proed+re are

• $roed+re" an great!y "imp!i%y JCL

• $roed+re" he!p in maintaining omp!e7 or !engthy JCL

• $roed+re" he!p yo+ to "tandardize data "et and program +"age


Conept"


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Which o& the &o%%owing are advantages o& using procedures?

. *hey "imp!i%y the JCL yo+ ha#e to ode %or a 9o.

B. *hey permit "tandardization o% data "et and program +"age.

C. *hey ena!e yo+ to opy parameter #a!+e" %rom pre#io+" :: "tatement".

:. *hey permit ea"ier maintenane o% JCL.

!re We on Track?


@e#ie8


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$roed+re D $repared "et" o% 9o ontro! "tatement" ata!oged in a proed+re !irary.

Compi!e D *o tran"!ate "o+re !ang+age "tatement" into mahine in"tr+tion".

Lin1 >dit D *o omine "+ro+tine" into e7e+ta!e program a!!ed a !oad mod+!e.

'%ossar


!o""ary


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)o8 that yo+ ha#e omp!eted thi" topi, yo+ "ho+!d e a!e to

• :e%ine a proed+re

• :e"rie the ad#antage" o% a proed+re

Topic u$$ar


S+mmary


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age '; o% &'


-hat i" a $roed+re





In#o1ing a $roed+re

*opi"

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age '& o% &'


• :e%ine ata!oged proed+re and in"tream proed+re

• >7p!ain ho8 to in#o1e the JCL %or a ata!oged and

in"tream proed+re

• Identi%y 8hih proed+re i" appropriate %or a gi#enapp!iation

Topic Objectives

Unit: Introducing Procedures Topic: Cataloged and In-Stream Procedures

Introd+tion

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age '< o% &'

proed+re i" re%erred to a" either a ata!oged proed+re or an in"tream proed+re depending +pon 8here

it i" de%ined.

What are cata%oged procedures?

Cata!oged proed+re" are "tored a" memer" o% a partitioned data "et that i" +"ed a" a proed+re !irary.

-hen a ata!oged proed+re i" +"ed, it" JCL i" ta1en %rom the de%a+!t proed+re !irary, or a +"er"pei%ied

proed+re !irary.

*ata%oged Procedures

IBM "+pp!ie" a proed+re !irary named

SESI.$@OCLIB.


Conept"

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age '= o% &'

*he JCL %or a ata!oged proed+re i" in#o1ed 8ith a

"ing!e >?>C "tatement.

Con"ider a proed+re y name $@OC. *hi" an

e

in#o1ed in t8o 8ay"

$reede the name o% the proed+re 8ith $@OCF

Synta7

//GO EXEC PROC%PROCA

Or y diret!y "pei%ying the proed+re name.

Synta7

//GO EXEC PROCA

Invoking a *ata%oged Procedure


Conept"

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ' o% &'

In+trea$ Procedures


In"tream proed+re" are identia! to ata!oged proed+re", e7ept that they are p!aed a!ong 8ith the 9o in

the inp+t "tream. -hen the proed+re i" in#o1ed, the JCL in the proed+re de%inition i" in"erted at the

in#oation point in the 9o "tream it"e!%.

Conept"

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*he %o!!o8ing point" m+"t e on"idered 8hi!e +"ing an in"tream proed+re

• *he JCL %or an in"tream proed+re i" de%ined 8ith the 9o "tream it"e!%.

• In"tream proed+re" egin 8ith a $@OC "tatement and are terminated y a $>): "tatement.

• *he in"tream proed+re i" p!aed %o!!o8ing the JOB "tatement +t e%ore the %ir"t >?>C"tatement.

• *he JCL o% an in"tream proed+re i" merged into the e7e+ta!e portion o% the 9o 8hen an >?>C

"tatement in#o1e" the proed+re.

Invoking an In+trea$ Procedure


Conept"

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age 2' o% &'

*he e7amp!e "ho8n on the right i" an in"tream

proed+re named @().

)ote that $@OC egin" the proed+re and $>):

end" it. *he proed+re i" in#o1ed y the %ir"t

>?>C "tatement.

In+trea$ Procedure !n "#a$p%e


//R1&' JOB ()$+,S-IT,+CLASS%A

//RUN PROC

//GO EXEC PG-%ONE

//SYSOUT DD SYSOUT%A

// PEND

//STEP1 EXEC RUN

*hi" i" the

proed+re

*hi" e7e+te" the proed+re

Conept"

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*hoosing The ,ight Procedure

When to use an in+strea$ procedure?

I% a proed+re i" 9+"t reated and ha" to e te"ted %or error", an in"tream proed+re an e +"ed.

When to cata%og a procedure?

I% a thoro+gh!y te"ted proed+re need" to e +"ed y many peop!e, it i" ata!oged %or "+"e6+ent retrie#a!.

ata!oged proed+re i" ea"y to retrie#e and maintain.


Conept"

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-atch the &o%%owing ite$s with their de&initions.

'. $roed+re . proed+re that i" de%ined in the 9o "tream.

2. Cata!oged proed+re B. $reoded JCL, 8ith a +ni6+e name, 8hih on"i"t" o% one or more 9o

"tep".

3. In"tream proed+re C. proed+re that i" "tored in a proed+re !irary.

!re We on Track?


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The &o%%owing are situations in which ou $ight use a procedure. -atch the situations with thetpe o& procedures that wou%d be appropriate.

'. *e"ting a ne8 proed+re . n in"tream proed+re

2. Many peop!e 8i!! +"e the proed+re B. ata!oged proed+re

!re We on Track?


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age 2; o% &'

$:S D $artitioned :ata Set. data "et on diret ae"" "torage that i" di#ided intopartition", a!!ed memer", eah o% 8hih an ontain a program, part o% a program

or data.

JCLLIB D "tatement that ena!e" yo+ to "pei%y yo+r o8n !irary %or !oating ata!oged

proed+re".

'%ossar


!o""ary

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age 2& o% &'


• :e%ine ata!oged proed+re and in"tream proed+re

• >7p!ain ho8 to in#o1e the JCL %or a ata!oged and

in"tream proed+re

• Identi%y 8hih proed+re i" appropriate %or a gi#en"it+ation

Topic u$$ar


S+mmary

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age 2< o% &'


-hat i" a $roed+re





In#o1ing a $roed+re

*opi"

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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age 2= o% &'


• Identi%y in"tream proed+re"

• :e"rie the %+ntion o% a $@OC "tatement

• :e"rie the %+ntion o% a $>): "tatement

• :i"+"" an in"tream proed+re de%inition

• Identi%y the "tep" in a proed+re de%inition

Topic Objectives

Unit: Introducing Procedures Topic: Identifying In-Stream Procedures

Introd+tion

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How to identi& an in+strea$ procedure?

n in"tream proed+re an e identi%ied y the "tatement" $@OC and $>):.

*he %+ntion o% the $@OC "tatement i" to i"o!ate the in"tream proed+re de%inition %rom the re"t o% the

JCL

"tatement" %or a 9o.

In+trea$ Procedure


Conept"

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*he $@OC "tatement identi%ie" the name y

8hih the proed+re i" in#o1ed.

Gor e7amp!e, the $@OC "tatement to identi%y the

eginning o% an in"tream proed+re named

$@OC i"

//PROCA PROC

P,O* tate$ent


//-YJOB JOB '001&+D.ROSE

//PROCA PROC

//PSTEP1 EXEC PG-%-YPROG//DDIN DD DSN%INDATA+DISP%SR

//DDOUT DD SYSOUT%A

// PEND

*hi" de%ine" the

proed+re

Conept"

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*he $>): "tatement immediate!y %o!!o8" an

in"tream proed+re de%inition.

It an e +"ed 8ith or 8itho+t a name.

// PEND

or

//ENDPROC PEND

P"/0 tate$ent



//PROCA PROC


//DDOUT DD SYSOUT%A

// PEND

*hi" de%ine" the

proed+re

Conept"

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"nter the 1*2 state$ent that begins an in+strea$ procedure 33333333333.

!re We on Track?


@e#ie8

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n in"tream proed+re de%inition an e in!+ded any8here 8ithin a 9o "tream %o!!o8ing the JOB

"tatement, +t it m+"t preede the >?>C "tatement that in#o1e" the proed+re.

enera!!y, the de%inition" %or an in"tream proed+re are p!aed at the eginning o% the 9o "tream.

In+trea$ Procedure 0e&inition


Conept"

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*he e7amp!e on the right "ho8" a 9o "tream

that ontain" an in"tream proed+re de%inition

named $@OC.

*he JCL et8een the $@OC and $>):

"tatement" de%ine" the proed+re. *he

>?>C "tatement that re%er" to the proed+rename e7e+te" it.

In+trea$ Procedure !n "#a$p%e



//PROCA PROC


//DDOUT DD SYSOUT%A

// PEND //STEP1 EXEC PG-%PROG1

//DD1 DD DSN%DATA1+DISP%SR

//DD& DD SYSOUT%A

//STEP& EXEC PROCA *hi" de%ine" the

proed+re

*hi" e7e+te" the proed+re

Conept"

/OS MVS JCL I di

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,e&er to the procedure &or -41O5 shown be%ow

Which o& the &o%%owing "6"* state$ents invokes the procedure?

. EXEC PROCA

B. EXEC PG-%PROG1

C. EXEC PG-%-YPROG

!re We on Track?


@e#ie8

//-YJOB JOB '001&+D.ROSE//PROCA PROC


//DDOUT DD SYSOUT%A// PEND//STEP1 EXEC PG-%PROG1

//DD1 DD DSN%DATA1+DISP%SR//DD& DD SYSOUT%A

//STEP& EXEC PROCA

/OS MVS JCL I t di t

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proed+re de%inition may ha#e "e#era!proed+re "tep". >ah "tep on"i"t" o% the

%o!!o8ing

• n >?>C "tatement that identi%ie" a

program to e e7e+ted

• *he :: "tatement" re6+ired to de%ine

the data "et" to e +"ed or reated y

the program

Procedure 0e&inition



//PROCA PROC


//DDOUT DD SYSOUT%A

// PEND

//STEP1 EXEC PG-%PROG1

//DD1 DD DSN%DATA1+DISP%SR

//DD& DD SYSOUT%A

//STEP& EXEC PROCA

Conept"


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*he in"tream proed+re de%inition on theright ontain" the %o!!o8ing t8o proed+re

"tep"

• $S*>$', 8hih e7e+te" a program

named $@O'

• $S*>$2, 8hih e7e+te" a program

named $@O2

$S*>$' identi%ie" the program name $@O'5.

*he :: "tatement" that %o!!o8 de%ine the data

"et" that 8i!! e reated y the program.

In+trea$ Procedure 0e&inition !n "#a$p%e


//TRANSACT PROC

//PSTEP1 EXEC PG-%PROG1//DD1 DD DSN%INTRAN+DISP%SR

//DD& DD DSN%-ASTER+DISP%SR//DD' DD SYSOUT%A

//DD DD DSN%2ALID+UNIT%SYSDA+// DISP%(NE3+PASS$+SPACE0(TR4+(1+1$$//PSTEP& EXEC PG-%PROG&

//DD) DD DSN%2ALID+DISP%(OLD+DELETE$

//DD DD SYSOUT%A

//PEND

Conept"


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Which o& the &o%%owing can be par t o& a procedure de&inition?

. $@OC "tatement

B. >?>C "tatement in#o1ing the "ame proed+re

C. $roed+re "tep :: "tatement"

:. $>): "tatement

!re We on Track?


@e#ie8


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7o%%owing are 1*2 state$ents &ro$ a sa$p%e job strea$ containing an in+strea$ procedure. P%acethe state$ents in the correct order.

. //PSTEP1 EXEC PG-%-YPROG

B. //STEP1 EXEC PROCA

C. //PROCA PROC

:. //-YJOB JOB ''001&+D.ROSE

>. // PEND

G.//DDIN DD DSN%INDATA+DISP%S

. //DDOUT DD SYSOUT%A

!re We on Track?


@e#ie8


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$roed+re :e%inition D *he JCL "tatement" that de%ine a proed+re, 8hih may on"i"t o%"e#era! proed+re "tep".

'%ossar


!o""ary


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• Identi%y in"tream proed+re"

• :e"rie the %+ntion o% a $@OC "tatement

• :e"rie the %+ntion o% a $>): "tatement

• :i"+"" an in"tream proed+re de%inition

• Identi%y the "tep" in a proed+re de%inition

Topic u$$ar


S+mmary


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-hat i" a $roed+re





In#o1ing a $roed+re

*opi"


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• >7p!ain ho8 to ata!og a proed+re

Topic Objectives

Unit: Introducing Procedures Topic: Cataloging Procedures

Introd+tion


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*ata%oging

What is cata%oging?

One an in"tream proed+re i" te"ted, it an e ata!oged %or genera! +"e. Cata!oging mean" "toring it

in a proed+re !irary $:S5 +"ing a +ti!ity program.

One an in"tream proed+re ha" een ata!oged, the >?>C "tatement that in#o1e" thi" proed+re re%er" to

it y it" memer name in the proed+re !irary.


Conept"


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In the e7amp!e, notie that the proed+re name $@OC hange" to the memer name $@OC'23 one the

proed+re i" ata!oged.

("er" m+"t then in#o1e the proed+re +"ing the name $@OC '23.

*ata%oging !n "#a$p%e


Conept"


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• >7p!ain ho8 to ata!og a proed+re

Topic u$$ar


S+mmary


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-hat i" a $roed+re





In#o1ing a $roed+re

*opi"


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• >7p!ain the need %or proed+re !i"ting"

• :e"rie ho8 to otain proed+re !i"ting"

Topic Objectives


Introd+tion

Topic: Obtaining a Procedure Listing


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Be%ore a proed+re i" +"ed, the +"er "ho+!d otain a JCL !i"ting and e7amine it" ontent" to en"+re that itmeet" the proe""ing re6+irement".

*he +"er m+"t determine that the proed+re eing +"ed e7e+te" the right program" in the proper

"e6+ene, +"ing appropriate data "et".

Overview

Unit: Introducing Procedures Topic: Obtaining a Procedure Listing

Conept"


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ;0 o% &'

How to obtain a procedure %isting?

proed+re !i"ting an e otained +"ing one o% the %o!!o8ing method"

• ("e the I>B>)>@ +ti!ity.

•

("e the I>B$*$CH +ti!ity.

• >7e+te a 9o and in!+de the *E$@()FSC) parameter on the JOB "tatement. *hen, 8ithin the

9o "tream, in!+de an >?>C "tatement that re%er" to the proed+re to e !i"ted.

Procedure 2isting


Conept"


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ;' o% &'

Procedure 2isting !n "#a$p%e

*he %o!!o8ing e7amp!e "ho8" ho8 to +"e *E$@()FSC) to otain a !i"ting o% a ata!oged proed+renamed $@OCB.

//-YJOB JOB '0&01&+D.ROSE+

// TYPRUN%SCAN

//JSTEP EXEC PROCB


Conept"


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4ou can get a procedure %isting b coding 3333333333 on the 1O5 state$ent o& a job that invokes

the procedure.

!re We on Track?


@e#ie8


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• >7p!ain the need %or proed+re !i"ting"

• Identi%y ho8 to otain proed+re !i"ting"

Topic u$$ar


S+mmary


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-hat i" a $roed+re





In#o1ing a $roed+re

*opi"


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ;; o% &'


• Identi%y ho8 to in#o1e a proed+re

• Identi%y ho8 to otain a proed+re name

Topic Objectives

Unit: Introducing Procedures Topic: Invoking a Procedure

Introd+tion


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ;& o% &'

proed+re i" in#o1ed 8ith an >?>C "tatement that identi%ie" the proed+re y name.

*he e7amp!e "ho8n in#o1e" a proed+re named $@OC.

Invoking a Procedure


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ;< o% &'

*o in#o1e the proed+re $@OC the %o!!o8ing "tatement an e +"ed

//JSTEP1 EXEC PROC%PROCA

In another 8ay o% in#o1ing a proed+re, the programmer an omit $@OCF in the >?>C "tatement. In thi"

%ormat on!y proed+re name i" gi#en.

In the e7amp!e on"idered, the proed+re $@OC an a!"o e in#o1ed in the %o!!o8ing 8ay

//JSTEP1 EXEC PROCA

How to obtain the procedure na$e to speci& in the "6"* state$ent ?

Gor an in"tream proed+re, the proed+re name 8o+!d e the name identi%ied in the $@OC "tatement.

Gor a ata!oged proed+re, the proed+re name 8o+!d e the name +nder 8hih the proed+re 8a"

ata!oged.

Procedure /a$e


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© Copyright IBM Corp., 2000, 2004. !! right" re"er#ed. $age ;= o% &'

What is the di&&erence between invoking aprocedure and a progra$?

*o in#o1e a proed+re the 1ey8ord parameter

$@OCF an e +"ed e%ore the proed+re name

or it an e omitted.

Ho8e#er, to in#o1e a program, the 1ey8ord

parameter $MF m+"t e +"ed e%ore the

program name.

Con"ider the e7amp!e" "ho8n on the right.

*he %ir"t t8o e7amp!e" in#o1e a proed+re. *he

"eond one in#o1e" a program.

Invoking a Progra$



//JSTEP1 EXEC PROCA

*hi" e7e+te" a proed+re


//JSTEP1 EXEC PROG%PROGA

*hi" e7e+te" a program


//JSTEP1 EXEC PROC%PROCA

*hi" e7e+te" a proed+re

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)o8 that yo+ ha#e omp!eted thi" +nit, yo+ "ho+!d e a!e to

• :e%ine the term" proed+re, ata!oged proed+re and

in"tream proed+re

• Spei%y 8here a proed+re an e !oated

• Spei%y 8hen to +"e an in"tream proed+re and 8hen

to +"e a ata!oged proed+re

• Identi%y the JCL "tatement" that de%ine an in"tream

proed+re

•

Code the JCL to otain a proed+re !i"ting

• Code a "tatement to in#o1e a proed+re

Unit u$$ar


jclb unit 2

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