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Alter properties of a PDS

 
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senthil_1983

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Joined: 16 Apr 2008
Posts: 14
Location: Chennai

PostPosted: Wed Aug 20, 2008 4:49 pm    Post subject: Alter properties of a PDS
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I need change the record format of a PDS form U to FB..any one can give solution
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expat

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

PostPosted: Wed Aug 20, 2008 4:50 pm    Post subject:
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Have you
a) Written to it in error
b) Searched the forum for the fix
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expat

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

PostPosted: Wed Aug 20, 2008 4:52 pm    Post subject:
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Click HERE to see something that might help
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Anuj Dhawan

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Joined: 22 Apr 2006
Posts: 6258
Location: Mumbai, India

PostPosted: Wed Aug 20, 2008 5:56 pm    Post subject:
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Hi,

Here is another related link..

http://www.ibmmainframes.com/viewtopic.php?t=6131&highlight=recfm+u+iebgener

Well, I was trying to understand RECFM=U since some times, probably my little labour can help you here -

1. If you specify RECFM=U for an input dataset, MVS will truncate blocks longer than the BLKSIZE and accept blocks shorter than the BLKSIZE. This allows you to truncate unneeded data from data blocks, if that's what you want to do.

2. If the blocks are less than 32760, which is the largest BLKSIZE value that you can specify in JCL, then the file can be copied as RECFM=U, BLKSIZE=32760. This allows all blocks to be copied intact without knowing much about the format of the input data.
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