I have a question for the DeltaV experts regarding limitations related to the objectivity database size and performance. I have not been able to find anything that specifically addresses this topic in BOL. I’m trying to understand impacts to the database associated with class modules. There are two approaches to class-based design currently being discussed for our system as follows:
I’m not looking for a debate on the merits of either approach. I just want to understand how this will impact the performance of the objectivity database. If there is an order of magnitude increase in class-based control modules, does this create database performance issues? I don’t know how the database functions on the backend, but one potential area of concern is cross references between instances and class-based modules. For example, if there are 10,000 control module instances, and 1,000 control module classes being referenced with one approach vs. 100 classes referenced, does this have an appreciable impact to database performance? Any insight is appreciated.
Andre Dicaire
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