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 3462

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 7517

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

IBM, TCS,

3 26058

how would find total records in files using seqientional

HSBC,

1 9544

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

Infosys,

1 15650

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

CTS,

4 15668

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

CTS, IBM,

3 21680

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

CTS,

2 9128

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

CTS, IBM,

2 9137

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 8854

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 11337

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,

3243

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 8550

Un-Answered Questions { IBM MainFrame }

how can you check if a file is empty using jcl?

1420

What is bms map?

1196

what is the difference between a package and a plan. How does one bind 2 versions of a cics transaction with the same module name in two different cics regions that share the same db2 subsystem?

1060

what is search and searchall?what is the diffrence between them?give an best example?

6815

What are the prerogatives?

1078

What is concurrency?

1229

What is integrated data dictionary?

940

What is maximum displacement?

1175

What is meant by deadlock in db2?

1250

What is the main function of key-sequenced data set?

1023

What is adabas and why it is used?

943

How vsam files are read in cics pgms?

1301

What is difference between rollback and commit?

1157

in options (main) , what is meaning of main . if u not used main what will happen? After compiling, os will not understand where to load and execute from

2183

Outputs of explain are with matchcols = 0. What does this signify?

1051

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