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VSAM Interview Questions
Questions Answers Views Company eMail

Is it slower if you access a record through ALT INDEX as compared to Primary INDEX? Why?

 1 5445

Yes. Because the alternate key would first locate the primary key, which in turn locates the actual record. Needs twice the number of I/Os.

 2067

What is RECOVERY and SPEED parameters in DEFINE CLUSTER command?

 1 13683

Describe SHAREOPTIONS parameter (SHR) in Define Cluster command.?

 1 17199

What does the KEYRANGES parameter in Define Cluster commend do?

 1 6969

What are the optional parameters to the input dataset While loading the empty cluster with the data records?

IBM,

1 5544

What is IDCAMS? and what is the purpose of it?

 4 18003

How to delete a member using JCL.?

 5 14226

What is the Difference between LDS & ESDS ?

 3 14362

Is a delete operation possible in an ESDS?B. Is rewrite operation possible in ESDS ?

 3 9246

What is an alternate index and path ?

Infosys, TCS,

2 25866

How many buffers are allotted to VSAM KSDS and ESDS?

 1 7671

what's the biggest disadvantage of using a VSAM dataset?

Anjana, CTS, DSRC, IBM,

8 18567

what's the device independent method to indicate where a Record is Stored?

 1 5228

How many times secondary space allocated?

 5 9802

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Un-Answered Questions { VSAM }

What are the building blocks used in vsam datasets?

715

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

796

What is the device independent method to indicate where a record is stored?

771

What is the purpose of having vsam data space?

661

what do you mean by a vsam slot?

728




What is a lds (linear data set) and what is it used for?

673

Explain the function of the relative record data set?

683

Explain the biggest disadvantage of using a vsam dataset?

746

what do you mean by the repro command?

723

What is the biggest disadvantage of using a vsam dataset?

807

Explain the significance of the shareoptions parameter?

703

what is the probability of a complete system distortion under high end low performing multiprocessor job?

2185

name a few common vsam status codes?

770

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

716

What are the different dataset organizations used in vsam?

718

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