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's the biggest disadvantage of using a VSAM dataset?

Anjana, CTS, DSRC, IBM,

8 20745

what's the device independent method to indicate where a Record is Stored?

1 5846

How many times secondary space allocated?

5 11081

what is the RRN for the first record in RRDS?

2 12260

what is a Base Cluster?

HSBC, TCS,

3 11091

If FSPC(100 10 is specified does it mean that both the control interval and control area will be left empty because 100 % of both CI and ca are specified to be empty?

DSRC,

1 8473

What is a Generation Data Group (GDG)?

2 10604

How is a GDG base created?

5 27047

What is model dataset label(Model DSCB)?

1 23971

How are GDGs concatenated?

1 14936

How is a new GDG coded?

2 10319

When should DISP=MOD is used?

TCS,

6 47412

How is a dataset passed from one step to another?

DELL,

2 16538

How are datasets concatenated?

CitiGroup,

3 14435

What is the difference between the JOBLIB and the STEPLIB statements?

3 38498

Un-Answered Questions { IBM MainFrame }

Explain the difference between the into and the set option in the exec cics receive map command?

1182

Is condition checking possible in jcl? If yes, how?

1348

What is the difference between an obtain next and obtain first in idms?

945

What is db2 connect?

1128

how to move the records from file to array table. give with code example

2735

have you already used rexx - even for limited purposes? Do you need to maintain a high level of productivity during your transition to unix?

1001

Explain how can a jobs execution priority be modified?

1263

What is bms map?

1288

What is meant by drda?

1011

1.give the details about WHEN OTHER. 2. how many form are available in evaluate.

2170

How to pass data to a program that is coded in an exec statement?

1388

Explain the disadvantage of dynamic generation of acb?

994

What is the copy idms subschema-binds in idms?

906

How an empty file to be checked?

1101

which transient data queue support ati?

1193

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