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 26499

what is SYSPLEX,PARALLEL SYSPLEX & MONOSYSPLEX ?

IBM, TCS,

3 21428

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

2630

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 13033

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 7906

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

Ocwen,

19 52382

What is the purpose of 'CPYTOIMPF' command?

Aditya Birla, Redington,

6 22497

CAN WE INSERT FIELD IN PHYSICAL FILE BY USING OPNQRYF?

4 13138

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

4 12616

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

Ocwen,

4 13404

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 13862

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

2 6834

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

2 7810

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 9981

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

Mind Tree,

7 14300

Un-Answered Questions { MainFrame }

Write the difference between hidam and hdam databases?

1007

explain about maximum displacement and how to cross this limit?

1149

Mention the different locking levels that are available in db2.

1138

How did the release of cobol/370 version 1.3 improve the performance of release 1.1?

1083

State the maximum value up to which volumes can be inserted to an stogroup?

1047

What is the use of access method services in vsam?

1060

What information does a psb contain?

1112

What is db2 command?

1039

What is the difference between external and global variables in COBOL?

1466

what is the use of outrecord?

2221

How to create a login screen using a command instead of display file.... intention is to get a password field on a command..... how do you achieve this...

1893

How to find all duplicate records?

983

distinguish between terminating a program through seton lr and return?

1104

What tools are available in PL/1?

1525

What is concurrency?

1235

For More Un-Answered { MainFrame } Questions Click Here