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

In the CICS command level all the re-entrancy issues are handled by the System(True or False).

1 3667

In which CICS table would you specify the length of the TASK WORK AREA (TWA)?

IBM, TCS,

3 9240

What are the three BMS options ?

3 6375

What is the difference between the INTO and the SET option in the EXEC CICS RECEIVE MAP command?

1 6534

What are the CICS commands available for program control?

IBM,

1 4596

Once a transient data queue is read, can it be reread?

2 6370

An XCTL uses more CPU time than LINK (True or False)

1 6749

Can you simply check if length = 0 for checking if a field was modified?

IBM,

3 6828

Translation Time is not reduced if the Pre-compilation is done first(True or False).

Kanbay,

1 5198

The error code AEIV?

IBM,

1 9527

What is CECI?

IBM,

5 19431

What is ATI? What kind of TDQ can be used?

IBM,

3 14334

What is the option specified in the read operation to gain multiple concurrent operations on the same dataset?

IBM,

1 6359

List all the CICS tables and explain their contents.

IBM,

3 10276

A mapset consists of three maps and 10 fields on each map . How many of the following will be needed ?

3 8320

Un-Answered Questions { IBM MainFrame }

Must tape dataset definitions include vol=ser specifications?

1732

What are Naming Conventions in QMF?

1838

What is the significance of addrspc parameter in exec statement?

1219

What are literals?

1149

What is the function of a dd statement?

1218

What is blu acceleration in db2?

1083

If a (+1) generation dataset is created in the first step of a job, how can it be referenced in later steps of the same job for input?

1320

How ENQ and DEQ used in CICS?

1448

What is plan and package in mainframe?

960

what are the types of abends that occur on job failure? And explain the possible causes of these

1627

When the like statement is used?

1229

Explain dfsort utility?

1350

There are 5 fields and 1000 records in a file. Unload it into an array. Write the syntax for declaration and how will you unload it.

1449

Explain the maximum number of segment types allowed for a single database?

2277

What do you understand by the terms: joblib and steplib?

1185

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