David Kerr <dmk(at)mr-paradox(dot)net> writes:
> Tom Lane wrote:
>> David Kerr <dmk(at)mr-paradox(dot)net> writes:
>>> I get:
>>> vacuumdb: vacuuming of database "assessment" failed: ERROR: out of memory
>>> DETAIL: Failed on request of size 1073741820.
>>
>> What have you got maintenance_work_mem set to?
> maintenance_work_mem = 1GB
So evidently, when it tries to actually allocate 1GB, it can't do it.
Ergo, that setting is too high for your machine.
regards, tom lane