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IBM 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 26229

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

IBM,

2 14058

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

IBM,

1 7378

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

IBM,

1 8280

What is the difference between sequential files and ESDS files?

IBM,

1 7810

How do you load a VSAM data set with records ?

IBM,

2 7182

How do you define a GDG ?

IBM,

1 4467

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

IBM, iNautix,

3 11719

How are different versions of GDG named ?

IBM,

2 4549

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

IBM,

2 13599

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 5777

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

IBM,

1 5114

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

IBM,

1 4964

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

 1 6171

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

IBM,

1 8589

Un-Answered Questions { IBM MainFrame }

what are the differences between and exec cics xctl and exec cics start command?

683

What guidelines should be followed to write a structured cobol prgm?

675

Can anyone provide me the source code for LOC(lines of code) counter written in REXX language which can run on IBM mainframe z/OS V1R4. The LOC counter should be able to count the comments,lines of code,blank lines in a COBOL program and JCL's

2107

How can we find that module can be called – whether DYNAMICALLY or STATICALLY?

714

What is copy pending and check pending in db2?

580




Explain in brief how does db2 determine what lock-size to use?

603

What is difference between static and dynamic call in cobol?

781

Name the cics command that gives the length of twa area?

572

In sms datasets, what is the function of the dd mgmtclas keyword?

865

Can we give +2 instead of +1 while creating a new gdg file?

543

What is the eib?

591

Can you explain enq and deq used in cics?

641

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

1010

Have you used the sort in your project?for this type of questions any working on real time project give the eg. with real time scenario.

2062

With the use of an alternate index, how is a VSAM file accessed?

646

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