Frank, IMS DC does the same thing as CICS, but completely different.
An IMS control region with its message region function basically like CICSPlex with AOR's and TOR's. Transactions in IMS can be tied to specific message regions and you can have several message regions tied to a control region. Transactions can be balanced across the message regions, and on misbehaving message region will not affect any of the other message regions in the same control region. IMS was designed from the start to process transaction this way whereas CICS was build to handle all transaction in one region. The TOR, AOR concept was added on to CICS afterwards. IMS is a beast to administer and is, in my opinion, less flexible than CICS. CICS is very easy to maintain. IE: "CEDA DEFINE PROG(XXX_" compared to running gens etc. but one bad behaving transaction can bring everything to a halt in CICS. Ian http://www.cicsworld.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
