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

which SQL comment successfully removes uncommitted changes from a DB2 database A) rollback B) delete C) drop D) decommit

Accenture, Wipro,

2 12949

how do we do unit testing in mainfrmae. explain step-wise.

IBM, JBK,

2 16921

Can we use redefine clause in occurs clause?

10 25143

What is the difference between write & move in COBOL?

CSC, HHB,

3 15047

What is the meaning of 'TALLING' verb in cobol?

5 16842

What is the meaning of 'Eject' verb in cobol?

TCS, Wipro,

2 29016

How can we pass data from cobol to JCl?

ADP, Amdocs, IBM,

7 49081

How include time & date in the report generation in cobol programing?

2 11571

How does IDMS communicate with CICS?

Covansys, Satyam,

1 5955

What are the pertinent COBOL commands?

Satyam,

3243

What is the difference between a binary search and a sequential search?

10 47401

How can you pass values from COBOL program to non-COBOL programs?

2 7874

How does IDMS insure data integrity?

1 5262

What are the functions like c or c++ in cobol?

2 7236

What is difference between comp & comp-4?

6 22672

Un-Answered Questions { IBM MainFrame }

Write a cobol program making use of the redefine clause.

1231

Can you tell me how can you find out the # of rows updated after an update statement?

1157

I have a subprogram B calling from mainprogram A.I have opened a cursor in A ,Can i fetch the same cursor in subprogram B , If yes , Please explain the reason?

2453

A word in the computer memory is identified by_________

1069

Define an associator in adabas?

1045

What is the difference between dbm cfg and db cfg file in db2 ?

1599

What is maximum displacement?

1272

Explain in brief how does db2 determine what lock-size to use?

1101

Explain cemt transaction commands?

1245

How long have you been working on mainframes?

1018

can I redistribute oorexx freely with commercial software?

1116

Explain the function of the terminal control table?

1061

What is sysplex?

969

What is the use of dclgen in db2?

1140

how do you create a dataset in a jcl with the same file organisation as that of another existing dataset?

1470

For More Un-Answered { IBM MainFrame } Questions Click Here