On Wed, 5 Jul 2006 09:52:11 -0600, Paul Gilmartin <[EMAIL PROTECTED]> wrote:
>In a recent note, Tom Marchant said: > >> Date: Wed, 5 Jul 2006 08:01:05 -0500 >> >> I am not aware of any access method that will write short blocks at the end >> of a track in order to use the last remaining space. Load modules are in >> fact written with short blocks at the end of tracks. That is the reason >> that the recommended BLKSIZE for them is 32760. >> >Does this lead to significant waste of space if a load module library >is copied to a different device type, or is such a copy generally >done by rebinding? > COPYMOD does it correctly. There is more about this in the archives. >Does SDB select 32760? Does Binder fill 32760 in the DCB before SDB >receives control? > SDB selects the largest blocksize that fits two blocks per track. The binder does not specify BLKSIZE=32760 in the DCB before open. If it did, it would override the specification in JCL or in the DSCB. It might be possible for the binder to provide an OPEN exit to do this, but AFAIK, it does not. Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
