Alter properties of a PDS

senthil_1983 · New User Joined: 16 Apr 2008 Posts: 14 Location: Chennai

I need change the record format of a PDS form U to FB..any one can give solution

expat · Posted: Wed Aug 20, 2008 4:50 pm

Have you
a) Written to it in error
b) Searched the forum for the fix

expat · Posted: Wed Aug 20, 2008 4:52 pm

Click HERE to see something that might help

Anuj Dhawan · Posted: Wed Aug 20, 2008 5:56 pm

Hi,

Here is another related link..

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.