RE: Limits on composite key length, in various OS releases

Key length limits of 2000 bytes, may be composed of up to 120 columns.

http://publib.boulder.ibm.com/infocenter/iseries/v5r3/index.jsp?topic=/d
b2/rbafzmstlimtabs.htm

Originally, it seems the key length limit was 120 bytes, though I don't
see this in official documentation...

http://www.mcpressonline.com/programming/rpg/unlocking-the-klist.html

-Eric

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of James Lampert
Sent: Tuesday, February 15, 2011 4:31 PM
To: Midrange Systems Technical Discussion
Subject: Re: Limits on composite key length, in various OS releases

I wrote:

Does anybody know the maximum composite key length for files, in

various

OS releases?

Never mind. It was easier to find than I'd thought: 2000 since V2R2,
according to the DB2 Database Programming book. I've got an experimental

version compiling right now (should be ready by a week from next
Tuesday).

That does, however, beg the question of why, back in 1989, QV would have

been coded to put a brick wall after 99 bytes.

--
JHHL