Re: Convert EBCDIC to ASCII in batch?

-----Original Message-----
From: IBM Mainframe Discussion List
[mailto:IBM-MAIN@xxxxxxxxxxx] On Behalf Of gah
Sent: Tuesday, March 25, 2008 3:15 PM
To: IBM-MAIN@xxxxxxxxxxx
Subject: Re: Convert EBCDIC to ASCII in batch?


> Actually, I think that I've found the problem. There
appears to be a
> firewall between the mainframe and the Windows box. The
ftp which is
> failing is large (small ftps succeed!) and my estimate is
that it is
> taking just a bit over 2 minutes to complete the data transfer. I
> think the firewall is timing out the ftp control connection due to
> "inactivity". I have so informed management. Maybe
somebody there can
> light a fire under the firewall people to get off their
fundament and
> actually look at it.

It seems that many firewalls and NAT routers have much too short a
timeout for such connections. Even ones that do TCP keepalive
are often disconnected.

I would say two minutes is way way way too short, though.
Maybe 15 minutes is ordinary too short.

-- glen

Well, the firewall theory has bitten the dust. The LAN people have done
a packet trace on each side of the firewall. The results are identical.
no packets are being lost. And I transferred another really huge file to
the "bad" server which took over 4 minutes successfully. [blech]

Another weirdness: I can ftp the same data to a different Windows server
fine. I can ftp it to a Linux server fine. I can then ftp it from the
Linux server to the "broken" Windows server fine.

If I convert the data to ASCII on the mainframe and do a "binary"
transfer to the "bad" Windows server, it fails the same way. The ASCII
data on the mainframe, when binary ftp'ed to my Linux server is
identical to ftp'ing the EBCDIC file using the ASCII command on the ftp.
I'm really tired of this problem.

--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology

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