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

how to update asingle record in adabas? by using GET, can we do a single record updation?

Satyam,

1 5054

which are the parameters mandatory in job card ?

Accenture,

4 7938

How to copy VSAM files without using REPRO

ADP,

3 8718

is step name is compulsory in jcl ?

2 6983

I have put two write operations in a single para for two different conditions.Will that lead to an abend or run successfully and write two records?

CTS,

1 6019

Is it possible to access some memory location (Ex: VAR1 DS P) without using Base Displacement?

HCL,

1 3778

What is symbol table in assembler?

HCL,

2 5701

Suppose we have 5 steps in a job.No step should be executed After submitting every step in a job

AVB, IBM,

2 6044

query to just fetch first matching row and stop execution. once one matching row is found ..no more records should be checked.. if the first record is matching.. the query must stop

IBM,

2 5542

What is the maximum Key length of a KSDS dataset

2 4987

What is dummy parameter in JCL??

TCS,

3 7831

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Mphasis,

1 5016

i want new rexx tool which will perform jcl chk without submitting it

2095

How to recover a deleted source physical file from library?

HCL,

1 4049

If we put three reads in COBOL in the same para one after the other, to read a PS file,will it read the same record thrice or it will read three records sequentially? For example : Input File 01 02 03 Para 900 Read infile Display Infile rec Read infile Display infile rec Read infile Display infile rec. What will be the output?

2 5331

Un-Answered Questions { IBM MainFrame }

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

1193

what are the six different type of argument values in cobol that can be placed in various options of a cics command?

1289

Define a region in idms?

885

Explain the primary function of the processing program table (ppt)?

1002

B37 abend during spufi?

1464

how would you create a temporary dataset? And where will you use them?

1418

How you can read the file from bottom?

1162

Is it possible that the redefines clause has different picture clauses compared to the one it redefined?

1161

Explain the difference between dfhcommarea and tsq?

1115

is there any other way to install s/w in mainframe apart from smp/e system?

2633

What is the problem of ordered sequential files access?

1172

Define declaration generator (dclgen).

1123

what are the additional information you should give in the dd statement while defining the next generation of a gdg?

1001

Which components manage deadlocks in db2?

1075

What is the use of commit in db2?

1087

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