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 purpose of control intervals in vsam?

1056

What are the access method services used in vsam?

1079

What are the building blocks used in vsam datasets?

1038

What is a ci split?

1028

What are the steps involved in access method services?

1009

How is the sorting of vsam files carried?

1185

What is control area?

1146

What is the main function of key sequenced data set in vsam?

1032

What is control interval?

1124

Why is master catalog used in vsam?

1189

Why is it required to have a keyed directed retrieval?

1090

What is the function of linear dataset in vsam?

1119

What is the purpose of having vsam data space?

1016

What are the different dataset organizations used in vsam?

1057

What is the purpose of relative record data set used in vsam?

1156

Un-Answered Questions { IBM MainFrame }

How to Provide Column Names Using the DRAW Command ?

1581

What is a junction record?

1402

What is the max length of sqlca?

1277

Explain how do you set the mdt option to on status, even if data is not entered?

1151

which utility is used to run a cobol-db2 program?

1467

How to take backup of table in db2?

1131

What is runstats and reorg in db2?

1367

what are the reserved words for cics?

1160

What is the difference between goback, stop run and exit program in cobol?

1649

Distinguish among erase, erase permanent, erase selective and erase all?

1747

Explain paging concept in memory?

1091

Explain about LMFREE�free data set from its association with data ID

1682

How many bytes will a s9(8) comp field occupy ?

1191

What are the different versions of gdg named?

1050

Can an individual step be restricted from using all the jobs allowed cpu time?

1613

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