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 is a DB2 catalog?

2 7148

Why might full image copies be faster to implement than an incremental image copy?

4 6912

What is the purpose of the WHENEVER statement?

1 5061

Is there any advantage to denormalizing DB2 tables?

1 6646

What are some SQL aggregates and other built-in functions?

2 5383

What is sqlcode -922 ?

2 26401

What is lock escalation?

2 14369

What is the difference between primary key & unique index ?

Patni, Temenos,

6 27014

What is a DB2 bind?

3 7062

How does DB2 determine what lock-size to use?

2 8830

What are some characteristics of columns that benefit from indexes?

1 4597

How will you delete duplicate records from a table?

Google,

7 25052

When is the skeleton cursor table created?

1 5073

What is cursor stability?

1 5482

How do u achieve record level locking in DB2 versions when record level locking is not allowed?

IBM,

2 8442

Un-Answered Questions { IBM MainFrame }

What happens when we move a comp-3 field to an edited (say z (9). Zz-)?

1401

What does a finish do in idms?

939

what is the difference between COBOL2 AND COBOL390?

3049

What do you mean by cursor?

988

Why do we use cursor?

1095

Explain the advantage of dynamic generation of acb?

3196

Describe major components of db2?

1089

how we sort two input files based on a common column and giving one o/p file please send me the coding logic?

2128

What does the sample library of uni-rexx consist of?

1059

How arrays can be defined in COBOL?

1213

What is the difference between hidam and hdam databases?

959

What is the cics command that is used to access current date and time?

1118

How can i load all the data from a file to Table (array) in cobol.How i manage the occurs clause with out reading the file.Any options avilable ? Please can any one help me it is urgent?

2580

How to check table size in db2 sap?

1034

What is a db2 collection?

1034

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