while going through all of the patches I need to get ready to start an 8.9>9.1 financials upgrade, I came up with this probably simple question or a thread of thought. How are maintenance packs (or just change packages) and required for upgrade patches related? Do they overlap? I always figured the required for upgrade patches are generally fixes caught and reported during upgrade processes (either by testing or customer feedback), but do they also include fixes for reported bugs from running production environments?
Thanks for sharing any info, it always helps to get a clearer picture of things.