Re: Write a record at a specific RRN

Hi,

Because that requires a lock on the source file... which I can't establish.

The source file (which has > 100 million records) is still in use and will be updated continuously.

Kind regards,
Paul
________________________________________
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> on behalf of Charles Wilt <charles.wilt@xxxxxxxxx>
Sent: Thursday, August 12, 2021 18:49
To: RPG programming on IBM i
Subject: Re: Write a record at a specific RRN

Why can't you just
CPYF FROMFILE(SRCFILE) TOFILE(DSTFILE) FROMRCD(1) FMTOPT(*MAP *DROP)

FROMRCD(1)
- will preserve the physical RRN order from source to destination
FMTOPT(*MAP *DROP)
- will handle mismatched formats. Assuming the field names match and
types between matched name are compatible.

Otherwise, I don't think you can do it via RPG.

Maybe C/C++

Charles

On Wed, Aug 11, 2021 at 3:32 PM Paul Nicolay <paul.nicolay@xxxxxxxxxx>
wrote:

To be short... I'm trying to replicate a file with respect of the RRN
numbers.

And to make it more complex... I can't replicate it in sequential order,
but it needs to be random.
And second... the files don't have the same layout.
________________________________________
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> on behalf of John
Yeung <gallium.arsenide@xxxxxxxxx>
Sent: Wednesday, August 11, 2021 23:14
To: RPG programming on IBM i
Subject: Re: Write a record at a specific RRN

On Wed, Aug 11, 2021 at 4:40 PM Paul Nicolay <paul.nicolay@xxxxxxxxxx>
wrote:

The concept is that I don't know the file definition... ie. unique keys,

constraints, ... so writing dummy records is not possible as it might
violate the restrictions.

Even if it would work, once I write a dummy record I don't know if it is

"occupied" or not.

This is a very strange set of requirements you have. Can you describe
at a higher level what you are trying to do?

John Y.
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