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

Can anyone explain me CALL procedure in COBOL.Does it carries similarities like call by reference in C.

1 3461

i need the code for this program in cobol. 2 + 1 = 3 4+3=7 6+5=11 8+7=15 10+9=19

2 6684

what is record label is empty or standard in file description of data division?

HCL,

2 7513

what is label record is standard or omitted in file description of data division?

IBM, TCS,

3 26054

how would find total records in files using seqientional

HSBC,

1 9540

Can 88 level variable be declared in FD section..?

Infosys,

1 15645

I have 1000 rows in a db2 table.I want to update first 100 records,How do I do it?

CTS,

4 15661

How do I handle -911 (deadlock) error in a db2 program so that the program will never abend?

CTS, IBM,

3 21674

select distinct(empid),distinct(dept),name from EMP will the above query work?

CTS,

2 9125

We have an output dataset in job with disp parameter as SHR. Can we write data in that file dataset?

CTS, IBM,

2 9136

How can we increment subscript and index?

CTS, IBM,

1 8285

I have two tables A and B. Both tables are connected with SSN number as foreign key. I want to retrieve a column data from B table. How will you write a query?

CTS,

3 8852

While creating a table, by mistake you have given size of one field as 10. But as per requirement size should be 8. What is your next step?

CTS, IBM,

4 11332

We can allocate memory dynamically by using GET MAIN command my question is at what scenario we can't release this memory and reuse this same memory??

BirlaSoft,

3242

what are the paramater we cannot use in procedure?how many instream we can write in single jcl?can we call instream to catalog and ctalog to instream?

Satyam,

2 8544

Un-Answered Questions { IBM MainFrame }

Explain a linkage segment

1049

What is the advantage of creating the acbs well ahead of time?

1032

What does a store statement do?

1542

In a Natural program i used the below code for report FORMAT LS=132 PS=60 And down the line I want to change either LS/PS like FORMAT LS=120 PS=50, is it possible? How it will work?

1923

What is the facility that allows mainframes to be partitioned into lapars?

1101

What is db2 purescale?

993

What is the use of lds (linear data set)?

1015

What is the use of KSDS,LDS,ESDS,RRDS??what is VRRDS?? How are all these useful in realtime scenario??Plz helpme out...Its a recent question in IGATE..

8756

what is a corelated subquerry?

1121

what is the purpose of coding notify parameter in job statement?

1162

Explain the difference between external subroutine and subprogram?

1221

Explain dclgen.

1197

What is bind and rebind in db2?

1133

What is node in db2?

1042

Name the sections present in data division.

1237

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