-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of Ward, Mike S
Sent: Friday, May 15, 2009 8:38 AM
To: [email protected]
Subject: Re: BLOCK CONTAINS

What if a new device came out and there was a better optimum blocksize
for it? Wouldn't you have to recompile everthing that used that file to
get the optimum blocksize? I don't know I'm just asking. 

<SNIPPAGE>

Under VSE that would be true for other than VSAM access. 

Under MVS you would have to go out of your way to get into this problem
of being blocksize dependent. Granted, this was done in days when there
were different device geometries (2314, 3330, 3340, 3375, 3380, 3390).
But as has been and will be pointed out, as long as you specify
BLKSIZE=0, you will get System Determined Blocksize which will handle
this situation.

Regards,
Steve Thompson

-- Opinions expressed by this poster may not reflect those of poster's
employer. --

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