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 5879

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.

2359

What is RECOVERY and SPEED parameters in DEFINE CLUSTER command?

1 14245

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

1 17665

What does the KEYRANGES parameter in Define Cluster commend do?

1 7401

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

IBM,

1 6102

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

4 18831

How to delete a member using JCL.?

5 15200

What is the Difference between LDS & ESDS ?

3 15187

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

3 10263

What is an alternate index and path ?

Infosys, TCS,

2 26611

How many buffers are allotted to VSAM KSDS and ESDS?

1 8178

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

Anjana, CTS, DSRC, IBM,

8 20119

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

1 5689

How many times secondary space allocated?

5 10721

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Un-Answered Questions { VSAM }

If fspc(100 100) is specified does it mean that both the control interval and control area will be left empty because 100 % of both ci and ca are specified to be empty?

1060

what is the purpose of the verify function of idcams?

1014

What is a vsam dataset?

983

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..

8710

What is the function of linear dataset in vsam?

1035

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

965

What is the function of entry sequenced data set?

1037

What are the different versions of gdg named?

948

what are the additional information you should give in the dd statement while defining the next generation of a gdg?

944

Explain the function of entry-sequenced data set?

988

explain in brief why do vsam take more disk space than other utilities?

1036

what are the codes returned by the ams (access method services) command during the execution in vsam?

1249

State the differences between vsam and non-vsam files?

997

what is the syntax of ams modal commands?

1217

How do you calculate record size of an alternate cluster?

1080

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