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?

1130

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

1044

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

1029

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

961

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

944

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

1120

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?

1068

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

1401

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

1 1890

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

1178

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

1069

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?

1193

What is comp-1 and comp-2?

1226

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

1204

What is amode(24)?

1227

Un-Answered Questions { IBM MainFrame }

Explain adabas basic concepts. Like inverted list, address converter ,data storage?

986

Can I share my data with other jobs? How?

1109

What is the function of //cntl statement?

1328

How converted the natural coding for adabas

3267

Explain the biggest disadvantage of using a vsam dataset?

1034

Explain about cursor stability?

1045

can oorexx run normal rexx programs?

998

how to run batch program without jcl?

11536

Define cobol?

1391

which transient data queue support ati?

1151

How does cobol compile db2 program?

1048

what do you mean by define model parameter?

1145

Can you define an alias?

962

what is the difference between JES3 and JES2?

1130

What is catelog procedure and how many catelog procedure to use in one job?

8680

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