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

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 6043

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.

2499

What is RECOVERY and SPEED parameters in DEFINE CLUSTER command?

1 14434

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

1 17829

What does the KEYRANGES parameter in Define Cluster commend do?

1 7553

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

IBM,

1 6307

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

4 19201

How to delete a member using JCL.?

5 15605

What is the Difference between LDS & ESDS ?

3 15477

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

3 10533

What is an alternate index and path ?

Infosys, TCS,

2 26876

How many buffers are allotted to VSAM KSDS and ESDS?

1 8327

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

Anjana, CTS, DSRC, IBM,

8 20742

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

1 5842

How many times secondary space allocated?

5 11071

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Un-Answered Questions { VSAM }

What is the main function of key-sequenced data set?

1084

how many buffers are allocated to vsam ksds and esds?

1212

What is the use of KSDS,LDS,ESDS,RRDS??what is VRRDS?? How are all these useful in realtime scenario??Plz helpme out...Its a recent question in IGATE..

8829

How does control intervals and control areas related to each other?

1074

what is a base cluster in vsam?

1185

What is a lds (linear data set)?

1066

Using alternate indexes in batch program?

1173

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

1120

there are seven idcams commands in vsam. Can you name and explain each of them?

1164

What is the main purpose of having user catalog in vsam?

1132

Define base cluster?

1055

differentiate between sequential files and esds files in vsam?

1237

what will happen when you try to open an empty vsam file in a cobol program for input?

1093

how do you create an alternate index ?

1124

can you specify some the distinctive features of a ksds, key sequenced dataset?

1079

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