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

What are 77 levels used for?

1108

What is the difference between a binary search and a sequential search? What are the pertinent cobol commands?

1111

How do you define a variable of comp-1 and comp-2?

1201

What is rmode(any) ?

1268

Is it possible that the redefines clause has different picture clauses compared to the one it redefined?

1152

What is the difference between structured cobol programming and object alternativelyiented cobol?

1251

What the difference is between continue and next sentence?

1170

What is perform what is varying?

1177

How you can read the file from bottom?

1158

How do you differentiate between cobol and cobol-ii?

1213

Why would you use find and get rather than to obtain?

1187

How do you reference the following file formats from cobol programs?

1164

What is rmode(24)

1147

If you are current on the owner of a set, what is the difference between obtain next and obtain first?

1348

What is the default value(s) for an initialize? What keyword will allow for an override of the default?

1123

Un-Answered Questions { IBM MainFrame }

What do we mean by 'Virtual storage' for a dataset and for a JOBSTEP ? What is the significance of the following statement for a programmer 'Virtual storage results in program addresses being independent of the addresses that actually exist in a computer' ?

2026

How will you return the number of records in table?

937

Write the difference between hidam and hdam databases?

1007

Explain the job statement in jcl?

1162

How to check last update on table in db2?

1059

suppose 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?

975

What do you mean by an alias?

1083

What is control interval?

1071

What is adabas and why it is used?

955

Explain the cics command that is used for reading a record from the tdq?

1006

How to compare data between two tables in db2?

1088

What is db2 purescale?

1006

Comment whether the cursor is closed during commit or not.

1106

When a COBOL-DB2 program in PRODUCTION is updating main tables and gone for long run, what have to do?

3581

What is the use of db2?

1057

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