Martin, A couple of reasons spring to mind :
(1) Short path length to perform instructions to access data in CADS (load the ALET into ARx, init Rx, SAC 512). If you are in a system exit and your purpose is to intercept and store certain information, you need to do this as quickly as possible and then get outta there. (2) Support for earlier os levels? Rob Scott Rocket Software, Inc 275 Grove Street Newton, MA 02466 617-614-2305 [EMAIL PROTECTED] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Martin Packer Sent: 08 December 2007 11:38 To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Common Dataspace Can someone explain to me - in this day and age - why we're talking CADS and not Shared Memory Objects (above The Bar). Thanks! Martin Packer Performance Consultant IBM United Kingdom Ltd +44-20-8832-5167 +44-7802-245-584 [EMAIL PROTECTED] Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- 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 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