what's the biggest disadvantage of using a VSAM dataset?
Answers were Sorted based on User's Feedback
Answer / xyz
1. VSAM increases the disk space requirements. For self-
reorganization free space must be deliberately left.
2.Except for read-only the integrity of VSAM datasets in
cross region/system must be maintained by the user.
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Answer / sachin
THE BIGGEST DISADVANTAGE IS VSAM OCCUPIES MORE DASD SPACE
THAN NON VSAM
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / avinash kumar techrel
Free space Used in Contol Interval.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / nihar ranjan karan
The biggest disadvantage of a VSAM dataset I believe is
that it can be only be created on a DASD. So it obviously
means you cannot use any other media for storage and
retrieval of VSAM datasets.
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Answer / vinothkumar
DISADVANTAGES:
(i)the vsam file have FREE SPACE parameter with in the CI.
so,it will take large memory space.
(ii)it have CONTROL INFORMATION by itself. that's why it
will take more memory space.
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Answer / philippe van de woestyne
Also the overhead (shareoption(4)) when sharing (I/O) the
same file from multiple environment, EG Cics + Batch
Is This Answer Correct ? | 0 Yes | 2 No |
Define gdg?
there are seven idcams commands in vsam. Can you name and explain each of them?
What is the upgrade set?
How do you initialize a VSAM file before any operation? a VSAM with alternate index?
what how do you initialize a vsam file before any operation? A vsam with alternate index?
What are the common vsam error conditions and codes?
in vsam at the creation of cluster what is the use of RECSZ parameter?
Alt key is used for what type of vsam file
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.
How do you load a VSAM data set with records ?
What are the building blocks used in vsam datasets?
what are the additional information you should give in the dd statement while defining the next generation of a gdg?