MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

IBM MainFrame (5234)
IBM AS400 (1355)
IBM PL/1 (31)

MainFrame Interview Questions

Questions Answers Views Company eMail

if you wish to use the rewrite command how must the vsam file be opened?

IBM,

1212

what is the purpose of the verify function of idcams?

IBM,

1106

how do you create an alternate index ?

IBM,

1124

what is meant by dirty read in vsam?

IBM,

1395

name a few common vsam status codes?

IBM,

1114

explain the differences between vsam and non-vsam files

IBM,

1200

how do you define an altindx ? How do you use altindxs in batch, cics programs?

IBM,

1120

what parameter in the define aix option is used to determine the maximum number of duplicate keys allowable ?

IBM,

1062

explain the information contained in ci

IBM,

1093

difference between vsam and database tables

IBM,

1184

what is the meaning of each of the values in shareopts(2 3)?

IBM,

1076

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

IBM,

1062

what is buffering and how does it apply to vsam files ?

IBM,

1239

we can define the ksds cluster by two ways by using the file-aid or by using the idcams utility. Explain them.

IBM,

1403

explain icm instruction?

IBM,

1147

Un-Answered Questions { MainFrame }

What are catalog tables in db2?

1110

what is diffrence b/w file-aid tool and file-aid utility???

4971

Explain storage architecture of idms.

915

what are JCLLIB and STEPLIB in JCL?

1236

What is the difference between the positional and keyword parameters? Give examples.

1323

How to read the 2nd last record of a VSAM file? (The file size is huge and we don't know the key)

3324

what is the difference between normal upddta to pf and updating using dfu program?

1402

how do you use commitment control in rpg?

1329

can all users have the privilage to use the sql statement select * (dml)?

1224

can anybody post me about file-aid and changemen tools pls and give me reference if any mainframe guys are there

2525

Is their any limit for data sets?

1246

How can unused space allocation be returned to the system when a dataset is closed?

1571

1. There is a file called Month. Month has 12 members called Jan, Feb, ..., Dec. How to design a rpg code which can access any member and show its content. (User can ask for any member when required)?

1159

can you change the attribute in mapset? if so how?

2218

What is commarea (communications area)?

1068

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