Is the OP talking about running out of space in, e.g., ECSA, or is he talking 
about running out of page frames. As usual, the devil is in the details and he 
didn't give any.


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

________________________________________
From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of 
Peter Relson [rel...@us.ibm.com]
Sent: Sunday, March 20, 2022 8:16 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: SMF record - Looping and Memory shortage

<snip>
Cancel with DUMP option will be useful for the product owners but from zOS
is there a way to know in which memory block they are consuming more ?
</snip>

Without reading minds, no.

"Memory block" as you are using it has no meaning to the operating system. It 
only has meaning to the exploiter.

Why would you care which memory block an exploiter is using more of? That's 
something the exploiter (i.e, product owner) would be interested in. Don't you 
want to know which exploiter is using more of a resource than you want? PFA can 
help there.

Further, what does the fact that this exploiter is using more and more memory 
have to do with the problem that was encountered? TCP/IP was mentioned. It 
seems unlikely that TCP/IP has any knowledge of this or would base its actions 
on this. Obviously anyone running in that address space could encounter 
problems if they were unable to obtain storage in order to do what they needed 
to do.

Peter Relson
z/OS Core Technology Design


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