W dniu 10.11.2025 o 19:04, Jon Perryman pisze:
On Mon, 10 Nov 2025 15:02:33 +0100, Radoslaw Skorupka <[email protected]>
wrote:
ALLOC FI(IWASUSED) DA('SYS1.IWASUSED') MOD
Be aware this logic doesn't do any serialization and has the potential to miss
a couple of procs.
I don't think so.
JCL DISP=MOD and DYNALLOC MOD use very different serialization logic. If things
haven't changed, then most OPEN, WRITE & CLOSE code does not provide this
serialization either.
You should be able verify this by adding "READ AAA" after the PUTFILE in the
clist and running the clist from 2 TSO sessions at the same time. I don't know the
precise behavior but I vaguely remember missing lines when pressing enter to allow the
clists to complete.
IMHO it is irrelevant since it is possible to use separate dataset per
each proclib member. This is the thing you cut off ;-)
However I vaguely remain GRS contention caused by ALLOC FI statements
from different CLISTs or REXX scripts.
--
Radoslaw Skorupka
Lodz, Poland
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
