>> I grant you that untrammeled access to source code _can_ result in >> disasters. >Any example ?
Sure. The thousands of in-stream usermods that were written prior to XA, and which greatly inhibited subsequent upgrades. I certainly agree that in the early days usermods were written to overcome functional deficiencies in MVS. Some, such as logical swap, were incorporated into MVS. Others, such as the dual master catalog mod at a large US insurance company, proved to be a nightmare to maintain and an even worse nightmare to remove. Incidentally, that particular company had approximately 200 instream usermods. Consider the effort it would take to roll out z/OS releases with that level of modification even if source code were available. Bob Shannon Rocket Software ---------------------------------------------------------------------- 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
