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 3565

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 6800

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

HCL,

2 7698

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

IBM, TCS,

3 26209

how would find total records in files using seqientional

HSBC,

1 9635

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

Infosys,

1 15793

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

CTS,

4 15925

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

CTS, IBM,

3 21920

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

CTS,

2 9279

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

CTS, IBM,

2 9288

How can we increment subscript and index?

CTS, IBM,

1 8418

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 9059

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 11508

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,

3322

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 8715

Un-Answered Questions { IBM MainFrame }

Explain how do you set the mdt option to on status, even if data is not entered?

1151

Mention the different locking levels that are available in db2.

1194

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

1058

Explain how DSECT parameter is used in BMS ?

1264

A word in the computer memory is identified by_________

1069

Explain control variable in online screens?

1060

Can you use occurs in bms map?

1116

What do you mean by monitor block?

1907

What is cobol?

1296

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

2183

Suppose I have a ksds file. I have a records like 1,2,3,4,5,6,...100. I want to read using dynamic mode like from 10 the record onwards like, 10,12,14,16,18,....60. Wat is the command for this?

727

Can an individual step be restricted from using all the jobs allowed cpu time?

1614

How to pass the parameters from jcl to assembler program?

1064

What does the 'cemt:cics' transactions do?

1265

Explain the mdt in cics?

1240

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