BUFNO controls the GETPOOL done by OPEN in addition (for QSAM) to telling OPEN 
how many IOBs to allocat.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List [[email protected]] on behalf of 
Joseph Reichman [[email protected]]
Sent: Monday, March 22, 2021 11:57 AM
To: [email protected]
Subject: Re: Overlapped I/O completion

So are BUFNO= and GETPOOL/ GETBUF related
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