John, 

I know it doesn't help you, but the rest of us are kinda glad that you 
didn't find any short blocks. That's because PK16110 was supposed to fix 
that problem; otherwise we'd all be in trouble. I sincerely hope you can 
nail this one. 

.
.
JO.Skip Robinson
Southern California Edison Company
SHARE MVS Program Co-Manager
626-302-7535 Office
323-715-0595 Mobile
[EMAIL PROTECTED]

IBM Mainframe Discussion List <[email protected]> wrote on 03/01/2006 
01:44:35 PM:

> > -----Original Message-----
> > From: IBM Mainframe Discussion List On Behalf Of Patrick O'Keefe
> > 
> > On Wed, 1 Mar 2006 14:03:15 -0600, Chase, John wrote:
> > 
> > >...
> > >regular production FTP job gives a corrupted ASCII file about 40% of 
> > >the time.
> > >
> > >This is going to be one of those "fun" problems to document....  :-( 
> > >...
> > 
> > Can you run a packet trace during every transfer until you've 
> > traced a failure?  It sure sounds like you might have a bug 
> > in the the client or server or TCP/IP stack, and it's a good 
> > bet that the bug makes itself felt during exceptional 
> > conditions - retransmissions, duplicate ACKs, etc.  The file 
> > would not be corrupted unless you ran into one of those 
> > exceptional conditions.
> 
> It's beginning to look like that.  We've "played with" FTP-ing the file
> about a dozen times today, all without corruption.  Of course the
> Production job runs just before midnight....
> 
> Oh, BTW, using the JCL suggested by Brian Peterson I found that the
> subject file did not have any embedded short blocks.
> 
> > I don't know of any way to trap this except to have the 
> > packet trace of each transmission.
> 
> That's probably what we'll end up having to do, unless I can "get lucky"
> during the day.


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