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

Brief description of inline procedure of jcl.

1259

How would you understand error(execution phase)?

1252

What are the difference between jcl and jes?

1612

How gdg are concatenated?

1119

What is check constraint. Explain with example.

1109

What is dbrm? When it will be created?

1029

Is it possible to alter a table – for example adding a column, when another user is accessing or updating some columns?

1082

What is dbrm? What it contains?

1163

What does sqlcabc has?

1058

What is the difference between cursor stability and repeatable read isolation levels?

1178

How to execute stored procedures?

1130

What is sqlca?

1079

Are view updateable?

1045

How and when does the db2 enforces the unique key?

1083

What are sqlcodes –803,-805, -811, -818,-904,-911,-913,-101, +100?

1185

Un-Answered Questions { IBM MainFrame }

What is an ims database?

1146

What is page size in db2?

978

What is the function of //cntl statement?

1336

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

1111

What do you understand by the term job time – out and how can you overcome that?

1033

What is ENQ?

1075

What is the role of the data page in the db2 database?

1028

How does jcl act on code(if you take a cobol program)?

1289

What is cursor with hold option in db2?

1075

What is an ook-rec in idms?

875

How to find the UNIT and VOLUME of a (a) KEPT (b) UNCATALOGED and (c) CATALOGED dataset - using (i) JCL and using (ii) ISPF ?

2681

Why do we need integrated cics translator?

1061

In sms datasets, what is the function of the dd avgrec keyword?

1097

What is meant by drda?

960

How to run cobol program using jcl?

1233

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