Hi, On 2021-04-13 11:47:06 -0700, Paul Friedman wrote: > YES!!! This completely alleviates the bottleneck and I'm able to run the > queries full-throttle. Thank you SO much for your help+insight. Cool. And damn: I can't immediately think of a way to optimize this to not require this kind of hack in the future. > Interestingly, "lock pg_toast.pg_toast_2233612264 in ACCESS SHARE MODE;" > which should do the same thing returns an error " ERROR: > "pg_toast_2233612264" is not a table or view" > > Sounds like I should file this as a requested improvement? The ability to lock a toast table? Yea, it might be worth doing that. I seem to recall this being discussed not too long ago... Greetings, Andres Freund