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
