How Vsam was evolved? What was the equivalent file for ESDS,KSDS and RRDS prior to evolution? What were their disadvantages of those file which leads to evolution of ESDS,KSDS and RRDS files ?

1 Answers  

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

1 Answers   IBM,

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Can you delete vsam files with the delete option of the disposition parameter of jcl?

0 Answers   IBM,

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What is the procedure for running the batch job in mainframe?

1 Answers  

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Common VSAM Error conditions and codes

1 Answers  

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What are the distinctive features of a ksds, key sequenced dataset?

2 Answers  

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What is the maximum number of Alternate Index ???

4 Answers  

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What is the purpose of the FILE STATUS clause in the SELECT statement?

1 Answers  

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By looking into JCL can we identify the dataset is VSAM (VSAM dataset supposed to be a input dataset).In this scenerio how will we identify the dataset is VSAM ?

5 Answers   Cognizant, EDS, Shridhar,

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what do you mean by the repro command?

0 Answers   IBM,

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1. delete is not possible in esds. why? 2. i have 10 records in a esds file and i want to delete only 1st record ..then what i have to do?.. it will not affect any sequence of the RBA. 3. why open extend is not possible in rrds vsam file?

3 Answers  

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Define base cluster?

0 Answers  

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