MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

IBM MainFrame (5234)
IBM AS400 (1355)
IBM PL/1 (31)

MainFrame Interview Questions

Questions Answers Views Company eMail

i have 1000 records in input file and i want to sort it and the first 200 records to be placed in output file. how to do that??

L&T,

14 26885

what is SYSPLEX,PARALLEL SYSPLEX & MONOSYSPLEX ?

IBM, TCS,

3 21615

is there any other way to install s/w in mainframe apart from smp/e system?

2680

what is the general use of PARM? Give an explanation about the system defined parameters that could be passed through this PARM like XREF,LIST,LET,APOST,RENT etc..

Cognizant,

3 13170

why jobstep can't be more than 255 and for GDG has max limit 255 . Is there any relation between the two

IBM, Perot Systems,

1 8018

Which command we can use to update a physical file using c.l pgm?

Ocwen,

19 53021

What is the purpose of 'CPYTOIMPF' command?

Aditya Birla, Redington,

6 22726

CAN WE INSERT FIELD IN PHYSICAL FILE BY USING OPNQRYF?

4 13319

YOU CAN DELETE THE RECORD SPACE PERMENANTLY IN PHYSICALFILE THROUGH CL?

4 12782

is it possible to create a join logical file using two join logical files ? give exact reason for your answer

Ocwen,

4 13570

WHERE DO WE USE COMIT KEYWORD IN AN RPG PROGRAM? YOU MADE SOME CHANGES TO DATABASE BUT YOU DON'T WANT TO SAVE THOSE CHANGES NOW? HOW DO YOU HANDLE THIS ONE?

2 14021

HOW DO YOU DISPLAY A DISPLAYFILE AT OTHER WORKSTATION? CAN WE MOVE A PHYSICAL FILE? WITHOUT MOVING A FILE?

2 6962

WHAT ALL THE CONDITIONES REQUIRED FOR USING OPEN OPCODE ON A FILE?

2 7920

If a jcl has just 1 step and the input file to this does not exist, then what will happen if we submit this job?

3 10124

how can we view the entire objects and its types in a pgm?

Mind Tree,

7 14509

Un-Answered Questions { MainFrame }

Explain how do you access storage outside your cics program?

1027

What are the uses of commit and finish?

957

When we have a file with Duplicate records and I want to read the unique record from the file. For example a file containing Emp Name as 'Ram' and there are 3 entries of it. So how to read a unique record from File?

1013

A word in the computer memory is identified by_________

1063

explain the differences between vsam and non-vsam files

1200

When would you use abend command?

1244

how you will know whether you are in sfldrop or sflfold mode?

1111

what is a join logical file?

1264

writing an sql statement from selecting records from two files using single statement and nested select statement.

1254

How is the value function used?

1215

State the differences between vsam and non-vsam files?

1116

Explain db2.

1089

If a ceo wants to see all employees of the company from an online screen. How will be the design of the map from the developer point of view?

1091

Explain the maximum number of levels allowed in ims db?

3832

how do you use exceptional write in c specs?

1993

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