> I don't recall if they "go away" when the creating address space goes away;

If the TCB that owns the dataspace terminates, the dataspace will be deleted.

Some software products assign ownership to TCBs in ASID(0001) to ensure their 
CADS outlast an unexpected server address space termination - other software 
products have ASID and/or TCB level resource manager routines to cleanup any 
pointers or associations with the CADS when the server terminates.

Rob Scott
Lead Developer
Rocket Software
77 Fourth Avenue . Suite 100 . Waltham . MA 02451-1468 . USA
Tel: +1.781.684.2305
Email: [email protected]
Web: www.rocketsoftware.com


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Peter Relson
Sent: 02 July 2014 14:51
To: [email protected]
Subject: Re: 64-bit Common (Was: ECSA Survey)

>I was referring to how we use SP231.
It remains the case that SP231 is not task-owned, is not associated with an 
address space, is not cleaned up in any way by the system at any time.

>If I read correctly dataspaces are associated with address spaces.
As with many things, "it depends", in part on what you mean by "associated 
with". Common Area Data Spaces (CADS) might be thought to be associated with 
their creating address space but of course are addressable from all.
I don't recall if they "go away" when the creating address space goes away; 
normally they would be created by an address space that is not memtermable 
(such as *master*).

Peter Relson
z/OS Core Technology Design

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