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 an EVALUTE statement is the order of the WHEN clauses significant?

4 12525

Give some advantages of REDEFINES clause?

Syntel,

2 20879

How do you do in-line PERFORM?

Accenture,

4 18315

Explain call by context by comparing it to other calls.

1 9142

What does EXIT do ?

Deloitte,

3 13713

what is Pic 9v99 Indicates?

2 13591

What is an explicit scope terminator?

3 20281

COMP?

2 6387

What should be the sorting order for SEARCH ALL?

5 10658

How is sign stored in Packed Decimal fields and Zoned Decimal fields?

ABC, HCL, TCS,

6 38171

How do you define a table/array in COBOL?

Hexaware,

5 31445

When is a scope terminator mandatory?

3 9222

How do you submit JCL via a Cobol program?

IBM,

5 20886

What is the difference between a DYNAMIC and STATIC call in COBOL?

2 13321

Differentiate COBOL and COBOL-II?

2568

Un-Answered Questions { IBM MainFrame }

Explain lock contention?

1041

Can I cleanly uninstall oorexx?

955

What is db2 connect?

1061

If we say that bms length of field = 0, then what does that mean?

1255

in a jcl, a large volume dataset is loaded to a table using bmcload in step1 and an image copy of the loaded table is taken using bmccopy in step2. Step2 abends because the image copy dataset cannot hold the volume of the table. How can this be rectified?

1295

Is condition checking possible in jcl?

1207

how many buffers are allocated to vsam ksds and esds?

1163

what is JCL?

1154

Explain control variable in online screens?

992

Explain the difference between a package and a plan.

1051

Explain the disadvantage of dynamic generation of acb?

938

Why did you choose to work with ibm mainframe cobol programming?

1091

Mention the definition of cobol in varchar field.

1241

What is an OOK-Rec?

1697

How do you concatenate the firstname and lastname from emp table to give a complete name?

1071

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