Lack of query plan locking. I've had the query heuristics go bad and queries that used to take under 5 ms balloon to several seconds. It would be nice to be a

Lack of query plan locking. I've had the query heuristics go bad and queries that used to take under 5 ms balloon to several seconds. It would be nice to be able to lock query plans that deliver satisfactory performance for very high volume queries. It's a great db though, with very few bugs, high quality code, responsive devs, and relatively cheap support plans (like maybe $25k/year to get 24x7 support? I don't remember the numbers exactly) available from enterprisedb.com who have a bunch of core devs. In my one experience they knew their stuff.