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 the use of db2 optimizer?

1112

What are the full forms of spufi and dclgen and why are they used?

1087

Give a brief description of db2 isolation levels?

1069

What is db2 and what is the use of db2 optimizer?

1056

Mention data types used in db2 ?

1154

Explain the contention situations caused by locks?

1070

What is buffer pool and list some of them?

1028

Mention and explain the contention situations caused by locks?

1 1504

What is meant by union and union all?

1008

Explain package in db2 and its advantages?

1212

What is the main function of linear dataset?

1085

Explain about the file objects in vsam?

1038

Explain the process in which flat files are converted into vsam files?

1003

Explain the function of the relative record data set?

928

What are the different commands used in idcams for vsam?

1056

Un-Answered Questions { IBM MainFrame }

is it required that primary key values have to be unique? Do alternate key values have to be unique?

1052

what happens when COND is coded in JOB statement and when COND is coded inside EXEC statement?

1298

what are the idcams commands that can be used for vsam and explain each of them.

986

What is amode(24)?

1232

What is the purpose of idcams?

1044

What is the function of dbctl?

1119

What is a lds (linear data set) and what is it used for?

1005

What are various search techniques in cobol? Explain.

1068

Can we use procopt on pcb and segment field (senseg)?

981

What is the primary aspect of CICS?

1131

What is RRange and ARange?

2106

Give a brief description of db2 isolation levels?

1069

What is the difference between run mode and addressing mode?

1247

Differentiate between ci split and ca split?

1006

What does "using" do?

1051

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