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

What is Comp-2?

1202

What is the maximum value that can be stored in s9(8) comp?

1098

Give the format of using and giving in sort statement. What are the restrictions with it?

1096

Can I redefine an x(100) field with a field of x(200)?

1011

How many bytes does a s9(7) comp-3 field occupy ?

1013

How many bytes does a s9(7) sign trailing separate field occupy ?

1203

My program has an array defined to have 10 items. Due to a bug, I find that even if the program access the 11th item in this array, the program does not abend. What is wrong with it?

1142

What happens when we move a comp-3 field to an edited (say z (9). Zz-)?

1486

How many bytes do a s9 (7) comp-3 field occupy?

1 1978

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

1248

What is an in line perform? When would you use it? Anything else you wish to say about it.

1145

How do you code cobol to access a parameter that has been defined in jcl? And do you code the parm parameter on the exec line in jcl?

1252

What is comp-1 and comp-2?

1283

What is the default value(s) for an initialize and what keyword allows for an override of the default?

1268

What is amode(24)?

1300

Un-Answered Questions { IBM MainFrame }

Explain the different ways of initiating transaction in cics?

999

I HAVE 500 ROW TO UPDATE I WOULD LIKE TO USE ROLLBACK ALONG WITH COMMIT.WHAT IS THE SYNTAX TO CODE COMMIT AND ROLLBACK FOR EVERY 100 ROWS.AND HOW THE CURSOR ROLLBACK TO THE LAST COMMITTING POINT.

3266

What is a dbrm in db2?

1081

Name the 3 common ways to create maps?

1199

Are view updateable?

1095

Which isolation level provides maximum concurrency?

1208

can I redistribute oorexx freely with commercial software?

1109

What are the distinctive features of a ksda, key sequenced dataset?

1055

What is meant by an AICA ABEND?

1230

Which component is used to execute the sql statements?

1149

Why do we need integrated cics translator?

1132

What are the types of the dfhmdf present in the cics?

1042

Can you define cemt?

1120

how can you copy to a vsam cluster?

1209

Explain how can return codes be tested before execution of a job step?

1379

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