Patrick O'Keefe wrote:
On Mon, 19 Nov 2007 08:52:37 -0600, Richard Pinion <[EMAIL PROTECTED]> wrote:
...Can anyone tell
me the DCB attributes for the data set that would accept an NCP Dump.
...
Ours, allocated in 1997, is RECFM=FBS,LRECL=2048,BLKSIZE=2048.
That is obviously a pretty poor blocksize. I don't know if it is required
or just a very poor choice on our part.
Looks like the last dump was taken in 2001 so I know it worked with
those characteristics back then. And I doubt the requirements have
changed since them.
NCP dumping suppport was originally done cost-effectively, exploiting
IPCS's support for addressing a data set by relative byte. At that time
IPCS didn't support blocking, something that may explain the degenerate
BLKSIZE you see. In today's world, IPCS wouldn't object if you copied
the data set to one with an efficient BLKSIZE. I don't know whether the
code on the writing side has ever been upgraded to utilize an efficient
BLKSIZE directly.
Bob Wright - MVS Service Aids
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