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 5041

which are the parameters mandatory in job card ?

Accenture,

4 7910

How to copy VSAM files without using REPRO

ADP,

3 8687

is step name is compulsory in jcl ?

2 6962

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 6003

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

HCL,

1 3767

What is symbol table in assembler?

HCL,

2 5678

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

AVB, IBM,

2 6022

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 5531

What is the maximum Key length of a KSDS dataset

2 4966

What is dummy parameter in JCL??

TCS,

3 7806

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Mphasis,

1 5009

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

2085

How to recover a deleted source physical file from library?

HCL,

1 4037

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 5312

Un-Answered Questions { IBM MainFrame }

how to convert the recors form vsam file to db2 table tru file aid

3260

What is use of IBM framework?

2113

Which is faster delete or truncate?

1126

What is the use of symbol // in jcl?

1477

Explain the uses that are associated to tsq and tdq ?

1082

How to compare two files in SYNCSORT and on the mismatch record should be deleted from second file.

5538

how will you find a particular line in debugging if its a infinite loop

1759

For a db2 column that is being defined as decimal (11, 2), discuss the cobol picture clause.

1101

With the use of an alternate index, how is a VSAM file accessed?

1095

Explain dclgen.

1199

We have an output dataset in job with disp parameter as shr.

946

Explain the purpose of the dd keylen parameter?

1164

What is condition checking in jcl? Is this possible?

1114

What are the 4 fields in dd statement?

1264

What is the function of the dd mgmtclas keyword in sms datasets?

1234

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