>Wow! I think that is the largest ECSA specification that I have personally >seen needed. At least in modern days. Some old IMS LPARs I worked on needed >quite a bit... but it still wasn't that high.
IMS Fast Path EMH (Extended Message Handler) Buffers increased to 32K, and we had more than one assigned per terminal. That increased ECSA enormously. Fortunately, one of the IMS SYSPROGs was aware of a parameter that made them re-usable. That reduced the requirement drastically. As for private area requirements, we once used CONNEX (a message passing architecture) to handle 1400 ON-US ATMs (at the time) plus NOT-ON-US ATMs from all other institution, plus POS. It needed 1.3G user private to start, and 1.6 at steady state. Never expected to see VSC, that quickly. We had to do all the unpluggiing of ELPA, and ECSA, that we had to do Pre-MVS/XA. They've re-designed INTERAC so that there's now a central clearing for all transactions, so only the ON-US are seen by each institution. This should reduce the private areas needs if/when implementd, but I left the banking environment over 7 years ago, so I don't know the final outcome. PS: this drove our MVS guys nuts, because they wanted a one-size fits all environment for all 18 images, and couldn't do it. - I'm a SuperHero with neither powers, nor motivation! SHAZAM! ---------------------------------------------------------------------- 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
