Unfortunately, you can't terse/unterse a PDSE and some loadlibs, and sometimes XMIT has limits in some shops to the number of members that can be offloaded in XMIT. If you want to be sure that your process works regardless of the source format or size, you can IEBCOPY unload and reload it. I have a utility that looks at the first byte of the unloaded file to know if the source was a PDS or a PDSE so I can recreate the new file.

Thank you and best regards,
Billy Ashton


------ Original Message ------
From "Steve Beaver" <[email protected]>
To [email protected]
Date 12/18/2025 2:52:52 PM
Subject Re: Grrr! Yes, TSO TRANSMIT destroys PDSes (Rant)

Here is an option. AMATERSE will handle a whole PDS. Then download it and send 
it and then upload it and reverse the AMATERSE



Sent from my iPhone

No one said I could type with one thumb

 On Dec 18, 2025, at 13:20, Charles Mills <[email protected]> wrote:

 Yes, TRANSMIT, not RECEIVE.

 Why not use 3120 to begin with? Good idea. I used SDB, which is also often a 
good idea -- just not in this case.

 Charles

 On Thu, 18 Dec 2025 13:53:06 -0500, Phil Smith III <[email protected]> wrote:

 We've never had a problem either. We distribute our product as a Windows .exe 
(ouch) which uses InstallShield to force acceptance of a license. It then drops 
a binary blob onto disk. That gets uploaded (F 80) and RECEIVEd, which produces 
one PDS--also F 80--containing several members. Each of THOSE members is itself 
an XMITted library, and RECEIVEing those gets you the installation media. Some 
of the libraries are BLKSIZE 3120, some are larger.

 So Charles, I think you're doing ?something? wrong.

 Wait...you're XMITting into a PDS with a large blocksize? What is that large 
blocksize, and if you're putting XMITted files into it, why not use 3120 (or 
8000, or some other multiple of 80? Maybe that's the problem?

 Apologies if this is naïve.

 -----Original Message-----
 From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Lennie Bradshaw
 Sent: Thursday, December 18, 2025 1:35 PM
 To: [email protected]
 Subject: Re: Grrr! Yes, TSO TRANSMIT destroys PDSes (Rant)

 Just tested this on my z/OS 3.1 system and I have differing results to you. 
Existing blksize was respected.

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