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 we are using picture clause in the cobol programs?

2 7228

i need a small 3d program using inline and outline.

2169

i want a program using by if, evaluate , string, unstring, perform, occurs?

1 4640

I found some good questions/answers regarding IMS here:

3012

How to execute step2,step5,step7 of a proc of 10 steps? You are not allowed to change in JCL.

IBM,

3 14573

What is the logical entity between plan and Package?

5 8701

IN DFSORT sum fields=none is usec to remove duplicates.how to write the duplicates in another dataset?

2 13633

is it compulsory commitment control in journal?

TCS,

2420

How to delete the records of a dataset through cobol programme?We should not use jcl utilitities like IDCAMS.

2 9473

What are the common jcl syntax errors you get? This is not abends?

1 6269

suppose a cobol programme A calling programme B,C and D. If C undergoes some change what if A,B,C,D need to be recompiled or only C nee to be recompliled.

IBM,

2 8656

How do u know what version of cobol u are using?

3 15548

How can you create a VSAM dataset? Can you write a JCL for it?

IBM, TCS,

4 23306

What's the difference between DB2 active log and archive log? Thanks a lot...

IBM,

2 13207

how will you retrieve first record in table

UST,

1 6083

Un-Answered Questions { IBM MainFrame }

The disp in the JCL is MOD and the program opens the file in OUTPUT mode. What happens ? The disp in the JCL is SHR and the pgm opens the file in EXTEND mode. What happens ?

1508

Name the parameters which can be used to limit the number of records written to a sysout dataset?

1102

Tell about the ams used in vsam?

1118

Differentiate between control interval (ci) and control area (ca)?

942

Explain the system transid cemt?

1041

How to Create a Prompted Query?

1714

What are the different data types in cobol?

1335

Explain difference between escape(top or bottom) and escape immediate(top or bottom?

1079

how can a gdg base be created in a jcl. What is the difference between empty and scratch parameter while defining/altering gdg base?

1232

Ap wkur,=p5 where wkur is a label?

1072

How to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?

1002

What are the common vsam error conditions and codes?

1037

What are the rules of the move verb?

1195

Can you explain function of dbctl?

1077

What are catalog tables in db2?

982

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