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JCL and JES
1.What is the difference between JCL and JES.?
2.What is the difference between VSAM and DB2?rasheeed17
- Jan 19th, 2012
JCL: JCL is a language, We write JOBs in JCL laguage that is understood by Mainframe and job is executed, space allocations & other resource allocation is done according to the keywords specified by ...
mohammadanis.jamadar
- Oct 4th, 2011
JCL: is Job control Language.Through jcl we can decide what job has to be run what programs needs to be run.
JES: Job entry System : This will take care of the execution of the job . when a job is submitted it will allocate space for execution and will help in execution -
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Creating model for gdg
Is it necessary to create a model for gdg using IEFBR14 utility after creating gdg, if yes why it is created.
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What is sysda?
krishna
- Oct 11th, 2011
UNIT=SYSDA refers to the next available disk storage device.
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What is the difference between SYSPRINT and SYSOUT (in JCL)?
Hamsa
- Sep 25th, 2011
SYSPRINT-to print the utility messages in spool
SYSOUT-identifies the system output datasets,which are in
printed or punched format.Shakuntala Dey
- Sep 25th, 2011
SYSPRINT - when there is message from the utility.Say in ur jcl u have used sort.so all the sort related information will be available in SYSPRINT.
SYSOUT - Its to display the messages which is available in our coding. say display statements of cobol will be displayed in sysout -
How to use conditional statement in jcl?
How to use conditional statement in job as well as exec statement.with example?
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What is cataloging Data set?
srikanth
- Sep 18th, 2011
Cataloging a dataset means all the details related to dataset like on which VOLUME and on which UNIT does the dataset reside is stored in a register when you mention CATLG in DISP parameter. So whenev...
kckinney
- Jun 8th, 2007
A dataset can be allocated on a volume, but not cataloged. This means you will have to explicitly code the volser(s) and unit when trying to access the DSN in the future.(Note, this is not possible u...
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Impact Analysis from ISPF
if i changed one column of table, and i want to know impact of that change?(how do you do impact analysis from ISPF panel,explain in detail?
Aloke Deb
- Jul 25th, 2011
Go to ISPF panel and use the 3.14 option. Type the name of the column and in the Dataset field type the PDS which contains the Programs followed by (*). This will search the library and find all the p...
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Coding RECFM=F over RECFM=FB
What is the advantage of coding RECFM=F over RECFM=FB why not F.
guraddiv
- Jan 25th, 2011
RECFM=F means each record will be stored in each block, where as in FB group of records will be stored in one block.Please correct me if i am wrong.
ananta2010
- Jun 11th, 2010
RECFM=F record formate = F means fixed in whcih block and records are of same size.RECFM=FB fixed block in this several logical records are combined into one physical block.
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JCL Program Execution
If a JCL containing 5 steps in a proc, how will you execute only 2nd and 4th steps?
lrsantosh
- Jan 21st, 2011
One more way is by using If End-if command.//job1 job a123 'name' class=a?// restart=step002//step001 exec pgm=prog1//step002 exec pgm=prog2IF RC >= 0//step003 exec pgm=prog3?END-IF?//step004 exec ...
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If condition is given in job step, what about first step, whether the condition is checked for it or not? If checked then with which return code is it compared?
guraddiv
- Jan 5th, 2011
Coding COND parameter in the JOB card means whenever any of the steps inside the job satisfies the COND value, then all the steps following it are bypassed. Hence even though you c...
Lazar Kaplansky
- Sep 18th, 2006
COND= compares return-code from previous step(s) with a value; it does not make sense using COND= in first step of the job as the parameter will only be checked for correct syntax and ignored by the JES.
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How to override EXEC PGM in a PROC thru JCL ?
davindersingh29
- Dec 17th, 2010
//EXEC PGM=&MS043this is the syntax you are looking for...just give some name from the jcl
subha2010
- Sep 2nd, 2010
As far as I am concerned whenever you want to override kindly give a steplib statement for exec pgm within your job and within joblib statement
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DISP Parameter
If the DISP parameter for a dataset is DISP=(NEW,PASS,CATLG), What will happen when the JCL is run? The first time? The second time?
davindersingh29
- Dec 17th, 2010
DISP= (new, pass, catlg)if we look at the parameter 'PASS' per se, its used for temp datasets, so the dataset wont be retained after the job completes fine.So now we have two scenerios here.1....
vamsi reddy
- Jan 23rd, 2010
When you have more number of steps in a job then the file is moved on to next step.
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How do you concatenate odd/even generations in GDG's?
kckinney
- Nov 1st, 2010
This question is kind of weird, but here goes...There is no native way of doing this.If forced to get this info, I'd LISTC the base to a dsn and extract the actual gens. Use this information to create JCL that concat's the desired gens and submit the JCL via intrdr.
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Send email from JCL in Mainframe
How to send a Mainframe file to a mailbox using a JCL? Mailbox could be any? What parameters need to be passed in the JCL like - Host address, mail address, etc..?
arsagg
- Oct 21st, 2010
////SENDNOTE EXEC PGM=IEBGENER //SYSIN DD DUMMY //SYSPRINT DD SYSOUT=* //SYSUT2 DD SYSOUT=(B,SMTP) //SYSUT1 DD * HELO MVSHOST MAIL FROM: RCPT TO: DATA FROM: email id TO: email...
kckinney
- Sep 3rd, 2010
The other answers are fine as far as they go. They both assume SMTP is up and running unter TCPIP. SMPT polls a specific output queue and forwards any output in that queue to the next hop as...
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TSO command
what is an SDSF?
subha2010
- Oct 5th, 2010
TSO commads are used for online access of termimals.over riding jobs based on priority,terminate jobs which are actually not getting any transcation for a long time, route and redirect the terminal messages.
sree mallika
- Apr 20th, 2010
This is used to provide the information about the jobs like where there in input queue, hold queue, output queues.
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What is the meaning of data definition name (ddname) and dataset name (dsname) in the DD statement?
Data definition name is the eight character designation after the // of the DD statement. It matches the internal name specified in the steps executing program. In COBOL that's the name specified after the ASSIGN in the SELECT ASSIGN statement. Dataset name is the operating system (MVS) name for the file.
kckinney
- Sep 7th, 2010
DD (or Data Definition) is an arbitrary 8 character file name that a program performs I/O to/from.This directly correlates to to the DD name as specified in your JCL. If these two 8 character DD...
Soumik Das
- Feb 20th, 2007
The DD name is the logical 8 characters file name which alllows the pplication program to identify or tag the dataset.Whereas the DSN is the physical file name used by the MVS to identify the dataset....
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JCL Multi Threading
What is meant by multithreading in JCL?
kckinney
- Sep 3rd, 2010
That's a trick question - JCL does not inherently support multithreading. (Assuming multithreading means running several programs/processes at the same time.)A redneck way of accomplishing t...
sandeep.gadhave
- Apr 1st, 2010
You can reduce the processing time of a job by using multi-threading, by separating the input into different ranges and execute the same programs by submitting multiple jobs per range.
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How to update a particular row in a file using JCL?
Any utilities? Don't want to use any programs.
kckinney
- Sep 3rd, 2010
JCL itself is unable to do this, however there is a suite of programs beginning with IEB*.I think the one you're looking for is IEBUPDTE. The syntax of the commands are so arcane that it'...
serken
- Dec 20th, 2008
JCL itself cannot update any file. JCL only can execute other programs. Period.Any file update can be done either by a standard utility program, or by specifically written user program. Period.
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How do you duplicate data set in JCL
kckinney
- Sep 3rd, 2010
IDCAMS REPRO with LIKE //STEP01?? EXEC PGM=IDCAMS?????????? //SYSPRINT DD?? SYSOUT=*???????????????????????? //INFILE?? DD?? DSN=DATASET.OLD,?????????...
kckinney
- Jun 8th, 2007
There are many ways, here's one - Allocate the duplicate DSN using BR14 and the LIKE parameter. Then GENER the existing dataset to the new dataset.You can also use IDCAMS to do this using REPRO instead of GENER.kk
JCL Interview Questions
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