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...

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.

Answer / cng

vnn

differentiate between sequential files and esds files in vsam?

0 Answers   IBM,

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Hi, I want to create alternate index on VSAM file.my file structure is ex: RoomID pic x(7) R000001 Floor pic a((6) First RoomNo pic x(2) FA1 Occupied(yes/no) pic a(3) Yes Occupied Batch pic x(10). Maths i want to create alternate index on floor,roomno fields.can i create alternate index on both the fields.and tell me how to create.

1 Answers  

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explain in brief how you can create a vsam file?

0 Answers   IBM,

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Is CA(Control Area) is part of CI(Control Interval)

1 Answers  

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how to view clusters that has more than 10000 records

2 Answers  

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How many cluster index can have in a table?

3 Answers   HSBC,

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What are the different versions of gdg named?

0 Answers  

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what is the syntax of ams modal commands?

0 Answers   IBM,

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difference between vsam and database tables

0 Answers   IBM,

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what do you mean by a upgrade set in vsam?

0 Answers   IBM,

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By looking into the Jcl can we identify the dataset is VSAM?

5 Answers   Cognizant, Keane India Ltd,

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what how do you initialize a vsam file before any operation? A vsam with alternate index?

0 Answers   IBM,

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