In vsam why we use export-import utility?
Answers were Sorted based on User's Feedback
Answer / neha
we use export for backing up data from vsam dataset to a ps
and import is used for transferring data from ps to a vsam
dataset.though repro can do the same but the difference
lies in the fact tht export also extracts the catalog info
of the vsam so tht the vsam dataset can be easily rebuld
later on...
| Is This Answer Correct ? | 32 Yes | 0 No |
Answer / mohi
Export and Import Commands works for VSAM DS and Alternate Indexes. Export command is used to take BACK UP diff. VSAM DS and Import Command is to restore file to proper device.
Same process can be using Reqpro, but diff. is
Repro works for both VSAM and Non-VSAM DS.Export and Import Commands works for VSAM DS.
Repro backs up only logical records.Export backs up logical records and also attributes and Import redefines with attributes and reload the records.
| Is This Answer Correct ? | 4 Yes | 0 No |
What is a vsam dataset?
what is control interval(CI) and control Area(CA)
can we create PS file using IDCAMS utility?
when u r using repro command what happens if both infile and outfile names same
what do you mean by the cobol record key clause in vsam?
How can you create a VSAM dataset? Can you write a JCL for it?
What does the keyranges parameter in define cluster command do?
What is a lds (linear data set)?
How does control intervals and control areas related to each other?
What do you mean by dirty read ?
What is the base cluster?
if you wish to use the rewrite command how must the vsam file be opened?