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 VSAM  |  Question 28 of 35    Print  
What is the disadvantages of VSAM file?

  
Total Answers and Comments: 1 Last Update: November 30, 2007     Asked by: suresh_gop 
  
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November 29, 2007 13:47:08   #1  
thesmarttechie Member Since: November 2007   Contribution: 2    

RE: What is the disadvantages of VSAM file?


The primary disadvantage of VSAM is that it cannot be stored on TAPE Volume. In case you are handling huge amount of data many cyclinders will have to be allocated which is not cost-effective compared to flat files which can be saved in tapes..

Make a choice between vsam and flat files based on the amount of data mode of accessing etc..


 
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 Related Questions

Latest Answer : Guys,As you are aware, RDW stands for Record Descriptor Award.This is the first 4 bytes in a VSAM - Variable Record Length file that stores the actual length of the record. This is hidden if you browse a VSAM file. In a VB file, realistically the record ...

Latest Answer : EXPORT-IMPORT UTILITY is used to take a back along with the attributes of the VSAM file and restore the back with the same attributes respectively.We can use REPRO to take back up it will not copy the attributes of the file, it will only copy data ...
Read Answers (5) | Asked by : soni sinha

Latest Answer : What do you mean by record size? Are you asking about physical terms or logical? I can't say about current vsam but at one time the records were 512,1024,2048, and 4096. CIs which are the logical record could read multiple records and present them ...
Read Answers (11) | Asked by : Ranjit

Latest Answer : VSAM now can have 255 EXTENDS. ...
Read Answers (5) | Asked by : raghu

While designing vsam files,what's the best way to choose control interval size for the data and the index?
Read Answers (5) | Asked by : vinay

Latest Answer : Following steps will convert a sequential file to VSAM file.1. Sort the sequential fille, with SORT FIELD=NONE, to remove the duplicate key records.2. Define a VSAM file3. Use REPRO to copy the sequential file to VSAM file. ...
Read Answers (5) | Asked by : Rajee

Latest Answer : Are you sure? I didn't think you could create a VSAM data set without catalog entries because on the DASD VTOC when it is listed as VS, there are limited DSCB entries. I think that if you are creating a catalog entry for a VSAM data set, you must ...
Read Answers (2) | Asked by : dsrcbalaji

Latest Answer : we can access the spanned records in the MOVE Mode ...
Read Answers (1) | Asked by : padmanaban

Latest Answer : No Jayakumar is right, that is the way of conversion of flat file to KSDS. First sort, then copy to KSDS. ...
Read Answers (4) | Asked by : james

Latest Answer : VSAM was written as a replacement for ISAM. The main problem with ISAM was that if there were many insertions and deletions the way he chained the entries was horribly inefficient. VSAM through the use of splitting CIs was a hugh improvement. ...
Read Answers (3) | Asked by : Shashank


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