On Mar 5, 2007, at 2:27 PM, Ted MacNEIL wrote:
So all I'm saying is for your own JCL (occasional copies), go
ahead and always use COPYMOD if you like waiting longer. But I
would never suggest it be done for production jobs.
How many jobs in production do you have that it's an issue?
IIRC, COPYMOD came out with XA.
We've/I've used it non-stop since then.
It's never been a bottlneck/resource hog.
The only place it's measurable (that I'm aware of) is during
system's maintenance.
And, I would still do it, then.
Ted,
Not to disagree but for what its worth. When SERVPAC first came out
(10 years?) I don't recall it using copymod (I could be in error). I
do recall the tape spinning forward then rewinding then forward then
rewinding (100's of times) IIRC the job took several hours I would
probably be more concerned that the rewind/forward spacing on the
tape and the elapsed time it took rather than the amount of CPU time
the job took. As I recall it was an amount I certainly could live with.
Come to think about it, There was probably a copymod or two as IIRC
we had the IEBCOPY look alike and it did have some issue. In anycase
when I used the IBM version the slowness never bothered me.
Ed
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