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

What happens when you open an empty VSAM file in a COBOL program for input?

IBM,

5 28680

How do you initialize a VSAM file before any operation? a VSAM with alternate index?

IBM,

2 15219

What does a file status of 02 on a VSAM indicate?

IBM,

1 8203

How do you calculate record size of an alternate cluster? Give your values for both unique and nonunique.

IBM,

1 8960

What is the difference between sequential files and ESDS files?

IBM,

1 8696

How do you load a VSAM data set with records ?

IBM,

2 8120

How do you define a GDG ?

IBM,

1 5111

Do all versions of the GDG have to be of the same record length ?

IBM, iNautix,

3 13471

How are different versions of GDG named ?

IBM,

2 5567

Suppose 3 generations of a GDG exist. How would you reference the 1st generation in the JCL?

IBM,

2 14697

Suppose a generation of GDG gets created in a particular step of a proc. How would you refer the current generation in a subsequent step? What would be the disposition of this generation now?

IBM,

2 6936

What more info you should give in the DD statement while defining the next generation of a GDG?

IBM,

1 5843

Assuming that the DEFINE JCL is not available, how do you get info about a VSAM file's organisation?

IBM,

1 5762

During processing of a VSAM file, some system error occurs and it is subsequently unusable . What do you do ?

1 6970

How do you fix the problem associated with VSAM out of space condition?

IBM,

1 9682

Un-Answered Questions { MainFrame }

What is db2 purescale?

996

HOW to change the coloumns in XREF?

2005

What is access path in as400?

1349

What is the facility that allows mainframes to be partitioned into lapars?

1101

what is a base cluster in vsam?

1136

Give the definition of COMMAREA ?

1070

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

1073

Define cebr?

1103

What is difference between static and dynamic call in cobol?

1390

Why select is not preferred in embedded sql programs?

1299

what is the right time for using in-line perform?

1045

B37 abend during spufi?

1455

What is deadlock in db2?

1069

what are the various types of device files?

1683

Mention some fields that are a part of sqlca.

1033

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