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Copying the VRRDS file to another vb sequential file

 
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shaktiprasad

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Joined: 20 Aug 2006
Posts: 34
Location: chennai

PostPosted: Wed Jun 10, 2009 12:07 pm    Post subject: Copying the VRRDS file to another vb sequential file
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Hi ,

I have created a VRRDS file with following attributes:

Average record size 5
Maximum record size 600
Share options 3,4
Buffer space 7168

CISIZE Unit Prim Sec
Data 2048 CYLS 50 20
Index 3072 CYLS 50 20


The problem is while I am copying the VRRDS file to another vb sequential file,it's running for long time.

But when I am copying an RRDS(fb format) with almost same attributes as VRRDS file to vb sequential file with same record counts,it's running fine.

Number of records is in the range of 2.5 millions.

Can anyone throw some light on it?
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shaktiprasad

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Joined: 20 Aug 2006
Posts: 34
Location: chennai

PostPosted: Wed Jun 10, 2009 4:41 pm    Post subject: Reply to: Copying the VRRDS file to another vb sequential fi
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Hi ,

The issue is solved when I changed the attributes of the VRRDS file.
So the changed attributes are now as follows:

Average record size 5
Maximum record size 600
Share options 3,4
Buffer space 13312

CISIZE Unit Prim Sec
Data 6144 CYLS 50 20
Index 1024 TRKS 1 5

So I think the problem was due to buffer space which is now maximum.and CISIZE.

Thanks..
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Robert Sample

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Joined: 06 Jun 2008
Posts: 7999
Location: Bellevue, IA

PostPosted: Wed Jun 10, 2009 5:08 pm    Post subject:
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Quote:
So I think the problem was due to buffer space which is now maximum.and CISIZE.
Since you've actually used the MINIMUM buffer space allowed (two times the data CI size plus index CI size), I don't think you can say that you're using the maximum, and I definitely don't think you can say that your problem was caused by your buffer space -- since you had 2 times data + index before and you have 2 times data + index after.

More to the point, RRDS does not have an index component. If you have an index component, you are not working with a NUMBERED (RRDS) VSAM file. I'm not sure what you are working with, why you had your problem, or how it was resolved -- but the data you've presented is not consistent and does not match what you are saying.
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expat

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Joined: 14 Mar 2007
Posts: 8593
Location: Back in jolly old England

PostPosted: Wed Jun 10, 2009 5:14 pm    Post subject:
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Damnedably good spot Robert, Index portion for an RRDS.
It can only be a KSDS he's on about.
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