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

Explain index cardinality?

550

Define clustered index?

554

What is drda ?

595

What is the need of running runstats in the test environment?

577

What is the function of the verb initialize?

604

Write the difference between hidam and hdam databases?

566

What is the function of dbctl?

673

Write about a ‘view’ in brief?

557

How can a like table be created?

540

Write about the self-referencing constraint?

577

Explain database descriptor in brief?

597

State the maximum value up to which volumes can be inserted to an stogroup?

602

Explain isolation level?

629

What will be the result if on size error phrase is declared?

503

Explain delete-connected tables?

604

Un-Answered Questions { IBM MainFrame }

Explain the catalog?

564

Is it possible to define dd statements as you want?

644

In COBOL programming, what is PERFORM? What is VARYING?

668

What is the difference between PIC 9.99 and PIC9v99?

771

Why do we need reorg in db2?

558

What is mpp mode?

714

What do you mean by an alias?

524

What is idms-restart ?

1094

What is the information associated with sysibm.syslinks table?

657

What is the difference between binary search and sequential search?

638

what is db2 restart?

1689

Explain dbdgen process?

638

Can one database have multiple instances?

579

How to handle exceptional conditions in cics?

644

What is universal database?

617

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