Tom Marchant wrote:
On Fri, 27 Apr 2007 11:01:13 -0400, John Eells <[EMAIL PROTECTED]> wrote:
Tom Marchant wrote:
On Fri, 27 Apr 2007 10:14:55 -0300, ITURIEL DO NASCIMENTO NETO
<[EMAIL PROTECTED]> wrote:
Ira,
Try copying one of these PDSs (IEBCOPY - COPYMOD) to a new one with
the
other blksize, and then proceed with your compare step.
Still might not work. Unless you can guarantee that each member starts at
the same location on a track, you will likely have blocks in one PDS that are
different sizes than the blocks in the other.
If a large load module starts on a new track, you'll have a 32K block at the
beginning of the track, then a shorter block at the end. If the same load
moule starts after a member that ends with a 32K block at the beginning of
a
track, it will start with a smaller block, then have a 32K block at the
beginning
of the next track.
Well...this ain't easy.
Each member must start on a new track, because directory entries
use TTR pointers to PDS members. See (watch for wrap):
Not true. The TTR points to the track and record number where the member
starts. I just looked at one of my load libraries that has 27 members and is
using 19 tracks. This would be impossible if each member had to start on a
new track. It would also be very inefficient.
SYS1.LINKLIB on one system here has 3725 members and is using 70% of 3318
tracks. SYS1.LPALIB has 1695 members and is using 79% of 909 tracks.
Doh! That's what the "R" stands for, of course. You're
completely right.
--
John Eells
z/OS Technical Marketing
IBM Poughkeepsie
[EMAIL PROTECTED]
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