Re: could not access status of transaction pg_multixact issue

Alvaro Herrera-9 wrote
>
> There must have been some confusion somewhere; certainly you shouldn't
> be subtracting anything. The subtraction was just suggested as a way to
> determine the age. The value to update pg_database.datminmxid to is the
> oldest one of all the relminmxid in pg_class; so if you have 8376 as the
> minimum value there, that's what you set pg_database.datminmxid to. Not
> the 21973 value.
>
> update pg_database set datminmxid='8376' where datname='production-copy';

Ok, I'm still confused. Is the value to use the Max value of relminmxid
from pg_class or the value of NextMultiXactId from pg_controldump? Or are
these the same thing?

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