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?

1117

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

1091

Give a brief description of db2 isolation levels?

1074

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

1069

Mention data types used in db2 ?

1161

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 1508

What is meant by union and union all?

1012

Explain package in db2 and its advantages?

1219

What is the main function of linear dataset?

1090

Explain about the file objects in vsam?

1042

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

1011

Explain the function of the relative record data set?

936

What are the different commands used in idcams for vsam?

1064

Un-Answered Questions { IBM MainFrame }

How to view db2 table structure?

1018

Explain storage architecture of idms.

846

what happens if parmparameter passes zero bytes to the program

2133

What is mainframe application testing?

1057

What is Pic 9v99 Indicates in COBOL?

1264

When will a port of ooRexx to "XYZ" be available?

886

)If there are 10 steps in GDG, if I want to refer the step2 after step5 . what should I do?

2011

What is with ur in db2?

1320

which is more efficient, level 77 or 01?

1046

System Testing for Mainframe Developers What is System Testing? integration testing ? what's the procedure ..

2079

How can the duplicate values be eliminated from db2 select?

1106

Is it possible that the redefines clause has different picture clauses compared to the one it redefined?

1152

What is the return codes 0307 and 0326?

952

What is the IDD?

1553

What is an ook-rec in idms?

875

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