JCL Interview Questions
Questions Answers Views Company eMail

What is a GDG

IBM,

3 4734

What is a Generation Data Group (GDG)?

1 3854

How is a GDG base created?

4 13382

What is model dataset label(Model DSCB)?

1 13511

How are GDGs concatenated?

1 5156

How is a new GDG coded?

2 4090

When should DISP=MOD is used?

TCS,

5 23044

How is a dataset passed from one step to another?

DELL,

2 5208

How are datasets concatenated?

CitiGroup,

2 5258

What is the difference between the JOBLIB and the STEPLIB statements?

3 16318

Name some of the JCL statements that are not allowed in procs.?

1 5091

What is primary allocation for a dataset?

4 5926

What is the difference between primary and secondary allocations for a dataset?

8 23520

How many extents are possible for a sequential file ? For a VSAM file ?

2 9187

What does a disposition of (NEW,CATLG,DELETE) mean?

3 6783


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Un-Answered Questions { JCL }

What is timing concept in mainframe?

451


I have a cobol db2 program(PGM A) where other program (PGM B) will call this program and passes some 50 fields data to PGM A. PGM A has some layout in which it receives the data from PGM B. And this layout has been copied in the linkage section pf PGM A. After getting the data, PGM A writes the data in a flat file in the same layout which it receives from PGM B. PGM B is a simple COBOL pgm. Please provide a JCL to run these programs.

507


I HAVE A JCL WHICH IS USING 2 DATA SETS I WANT TO OVERRIDE THOSE DATA SETS HOW CAN I OVERRIDE THE FILES WITHIN THE JCL.GIVE ME THE SYNTAX.MAKE SURE THAT IT IS NOT CALLING ANY PROC.

874


Name a few IBM utility programs, and explain its function.

1780


I need exexution process for JCL programs

575


What is the job entry system used in your project? based on what criteria the sequence of jobs are picked if priority is not mentioned in the job card?

636


how to compare two datasets without using superce because output is limited to 133 bytes

75


Mainframes gets a text file that contains the name of the file. Now using JCL i want to locate that file name in the mainframe system and perform further processing. Please tell how to proceed

768


why should SYSIN DD * statement should not be included inside a PROCedure snippet??? please answer this.. i need to know.

670


I had Records in file Like this Company Code IBM 2 IBM 1 IBM 4 WIPRO 3 WIPRO 2 WIPRO 9 TCS 4 TCS 6 TCS 3 i want the record of every company with highest code How can i do that?

3492


Can anybody tell what is tool used to generate the list of PROCS used in JCL to generate a PROCTREE

911


How to find the UNIT and VOLUME of a (a) KEPT (b) UNCATALOGED and (c) CATALOGED dataset - using (i) JCL and using (ii) ISPF ?

866


What does it mean by Restart and Checkpoint in JCL ? How are checkpoints being taken and what is their usage ? How to use Checkpoint macro on a JOBSTEP ?

5686


What is 'mounting' of volumes ? Is there anything that a programmer can do in it ? How to find currently mounted volume ?

722


How to code these statements in JCL: CLEANUP INITIAL(NO) RESTART(NO) DYNALLOC(NO) job definition..?

557