"David Witham" <davidw(at)unidial(dot)com(dot)au> writes:
> Occasionally I get this error message from the analyze job:
> ERROR: simple_heap_update: tuple concurrently updated
> What does this mean and should I do anything about it?
You can get this if two ANALYZEs run in parallel for the same table;
whichever one tries to update pg_statistic second fails with the above
error. It's moderately annoying, but not dangerous.
regards, tom lane