Re: How to FTP big files (377 MB) from PC to IBM i

Thanks Jim!
I've been trying this interactively for now, with the idea of setting up a batch file (if the user wants to have it that way)

I the FTP commands as far as "pretending" to run the PUT statement.
"200 PORT subcommand successful" That lasted about 9 minutes, but then up popped "425 Not able to open data connection".

--Alan Cassidy
Thanks to all who even think about this and especially to those who contribute.

On 07/06/2026 5:19 PM EDT Jim Franz <franz9000@xxxxxxxxx> wrote:


is the ftp originated from the IBM i or from a pc or other server?
may need to turn on verbose logging in the ftp script
also, if replacing records in a database file, make sure the max records
for that file is big enough
from dspfd..
Member size SIZE
Initial number of records . . . . . . . . : 10000
Increment number of records . . . . . . . : 1000
Maximum number of increments . . . . . . : 1000
Record capacity . . . . . . . . . . . . . . : 1010000

(and i've moved much larger files than yours on and off the system)

can you show us the cryptic message, and the ftp script?

Jim Franz


On Mon, Jul 6, 2026 at 4:03 PM Jon Paris <jon.paris@xxxxxxxxxxxxxx> wrote:

To the best of my knowledge there is no size limit. I'm pretty certain we
have FTP'd files far larger than yours,

Have you checked the logs to detemine the underlying cause of the failure?


Jon Paris
Jon.Paris@xxxxxxxxxxxxxx

On Jul 6, 2026, at 3:18 PM, Infodorado InfoDorado via MIDRANGE-L <

midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

Where do I look for this?
I have a CSV file, size 377 MB, and when I ran FTP to upload it to the

IBM i, it quit. I assume it's a sie limit.

Can somebody tell me the standard size limit, and what the solution is

to get it done?

--lan Cassidy
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