When I owned a mainframe-to-PC file transfer software company we had a
customer with whom we went around and around and around on a problem that
they could only describe as "your product works during the day but not at
night." There did not seem to be enough intelligence/ambition at the
customer to run traces, collect logs, etc. The answer to all technical
questions was "it works fine during the day but not at night." We would ask
what error messages they were seeing and they would say "none -- it just
doesn't work at night."
In spite of many denials that this could possibly be the problem, the cause
turned out to be that at night they were shutting off the circuit breakers
that controlled the affected PCs. So you might want to look into that.
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf
Of McKown, John
Sent: Wednesday, February 10, 2010 5:31 AM
To: [email protected]
Subject: Re: FTP problems
> -----Original Message-----
> From: IBM Mainframe Discussion List
> [mailto:[email protected]] On Behalf Of ??? ?? ???
> Sent: Wednesday, February 10, 2010 2:24 AM
> To: [email protected]
> Subject: FTP problems
>
> Hi,
>
> Lately we've been having problems with ftp transfers from the
> mainframe to windows ftp servers.
> It usually happens during the night. When we rerun the job
> during the day, everything works fine.
>
> Can anyone suggest a procedure or product that would help pin
> point the problem.
>
> We are using z/OS v1.9.
> The ftp servers are running Microsoft FTP service.
>
> Gadi
What sort of problems are you having? We had a problem with an old Windows
version where the file transferred properly, but the server did not send the
proper response. In this case, I had to do a TCPIP trace of the entire ftp
transaction. I then sent that to the Windows people (who, of course, said it
was an IBM problem). They eventually just said to ftp to a different server
and the problem just "disappeared".
--
John McKown
Systems Engineer IV
IT
Administrative Services Group
HealthMarkets(r)
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