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What is Spanned parameter in vsam?


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bijal.awhad

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Joined: 19 Mar 2008
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PostPosted: Tue Jul 14, 2009 2:35 pm
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Hi

My requirement is to store records with record size of 172086 in RRDS vsam file.The thing i know is 'Spanned attribute is required for record size greater than 32761'.

I dont know what spanned parameter is & what it does.

Please let me know how to use spanned parameter?

If i can get any manual will really help.


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Bijal
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dbzTHEdinosauer

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PostPosted: Tue Jul 14, 2009 3:01 pm
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take a gander at VSAM Demystified at the IBM REDBOOK Site
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Robert Sample

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PostPosted: Tue Jul 14, 2009 3:29 pm
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The VSAM Demystified redbook explicitly states that RRDS does not support spanned records. You cannot use record lengths greater than 32K so you will need to redesign your records.
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bijal.awhad

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PostPosted: Tue Jul 14, 2009 4:59 pm
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Robert Sample wrote:
The VSAM Demystified redbook explicitly states that RRDS does not support spanned records. You cannot use record lengths greater than 32K so you will need to redesign your records.



Will there be any problem if we write 32K byte record in RRDS vsam?

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Bijal
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Robert Sample

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PostPosted: Tue Jul 14, 2009 7:46 pm
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As far as I know, there's no problem but I've never done it so I'm not sure.
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kumar40322

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PostPosted: Tue Jul 14, 2009 8:30 pm
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Hi

Spanned parameter helps to store record in more than one CI(control Interval).
But RRDS can't support this parameter.
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