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

COBOL (1072)
JCL (1031)
CICS (755)
DB2 (1122)

IMS (143)
IDMS (107)
Natural (81)
ADABAS (26)

REXX (60)
Assembler (68)
CLIST (6)
QMF (32)

MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

Why there is no questions in this column?

6 15746

What is a GDG

IBM,

4 17732

What is the different ways to initiate a task?

2 13210

why occurs clause not mentioned in 01 level

HCL, NIIT, TCS, Tesco,

6 46922

How to resolve the soc4 and soc7 errors?

IBM, RBS,

5 38911

what is the process of precompiler?

2 15836

What is buffrpool? Where we use it ?

Tesco,

2 13329

what is Runstats? Whem will u choose to runatats?

Danske,

1 12629

what is REORG? what is the use?

4 14746

What is binary search?

3 12171

What is the difference between PIC 9.99 and 9v99?

7 55660

What is the difference between index and subscript?

Visa,

5 40201

What is SET TO TRUE all about, anyway?

5 18255

What is COMP-1? COMP-2?

CitiGroup,

4 19506

What is difference between COBOL and VS COBOL II?.

Winsol Solutions,

1 5940

Un-Answered Questions { IBM MainFrame }

If I have a view which is a join of two or more tables, can this view be updateable?

992

What is the return codes 0307 and 0326?

770

What is the advantage in De-normalizing tables in DB2?

1021

Suppose I want to code a rexx program in order to get the inputfile and output files of jcl. I want code snippet or the coding for this?

775

I need to compare 3 variables(dates) and do some processing based on the earliest date. There could be more then 1 date record in any of the 3 fields. What is the best way to code this?

2121

What is the function of the steplib dd statement?

1020

What is the advantage of defragmentation?

830

example for sub strings ? and refernce modifications whit output pls

2174

Explain how to differentiate call by context by comparing it to other calls?

1017

How to retrieve rows from a db2 table in embedded sql?

1119

What is monosysplex?

644

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.

2140

how do we prepare test data using file-aid tool?

2385

What is host variable?

906

What is the syntax of JCL statement?

1044

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