We have a similar situation with the IBM WebSphere MQ for z/OS V6 (MQ Broker). We already have a number of Execution Groups, because only a limited number of flows fit in the private region of one Execution Group. One Execution Group has only 1 flow deployed because of this. Sure, part of it is data that could be moved above the bar, but another very large consumer of private area is LSQA/SWA and programs, so the 2GB equivalent of the 640k-is-more-than-enough problem is probably less far away than we might hope.
Kees. "Tom Harper" <[email protected]> wrote in message news:<[email protected]>. .. > I'm not so sure. Many CICS shops have pointed out to me that they are forced to run hundreds of CICS regions for the simple fact that 2G is not enough address space to contain all of their programs. This requires them to spend an inordinate amount of time managing regions for the sole reason of address space exhaustion. > > There is no question that there are other consumers of address space in the CICS regions, but many of these are buffers which have to be duplicated in every region, and in any case are not the limiting factor. > > Tom Harper > Neon Enterprise Software > Sugar Land, TX > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Peter Relson > Sent: Thursday, December 02, 2010 6:49 AM > To: [email protected] > Subject: Re: 64 bit mode disabled > > Execution above 2G is not provided in z/OS simply because there has been, > and still seems to be, no valid business case for the large expenditure it > would take to make it a reality. It is certainly a "logical" part of the > 64-bit architecture, but if there is no true need, it might never get done > for the general case. Data, rather than code, is what is typically truly > growing by leaps and bounds. > > Peter Relson > z/OS Core Technology Design > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
