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How to access an IMS back up database.

 
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Sasi Kiran Patha
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Joined: 19 Nov 2006
Posts: 73
Location: Hyederabad

PostPosted: Fri Oct 12, 2007 10:32 am    Post subject: How to access an IMS back up database.
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hi,

Back up of an IMS database is in a flat file.
The flat file is input to a batch program.
The batch program should access a field in say segment A of the hierarchy.
How do we do it?
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Sandy Zimmer

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Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE

PostPosted: Fri Oct 12, 2007 7:46 pm    Post subject:
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Are you writing a new program? What are the requirements? Why are you reading the backup? How often is the IMS database backed up? Is the backup in sync with the live IMS data?
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Devzee

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Joined: 20 Jan 2007
Posts: 684
Location: Hollywood

PostPosted: Fri Oct 12, 2007 11:27 pm    Post subject:
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Do you know how the backup file is created? how the backup format looks like?

If this is IMS database tape backup done using tool like BMC, then I bet you cannot read this file and interpret what segment or data.

If you mean that the backup is actually an image copy with all segments etc.. then also it's not an easy task of reading this flat file directly.

I reckon you should write a DLI program to read your Segment A and required field with SSA which is easier and quicker rather than reading a huge backup file.
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