Re: pg_dump question

Laurette Cisneros wrote:
>
> We use pg_dump nightly to dump data from all tables in our databases (only
> table data, makes restore easier, trust me on that).
>
> My question is this:
>
> I have many tables that have millions of rows.
>
> Let's say I start the pg_dump...
>
> Then, an update in a transaction occurs that updates 3 different tables
> over a period of time.
>
> Will some of the pg_dump table data be "out of sync"?
>
> How exactly does pg_dump (if at all) handle transactions/table changes?

Pg_dump takes a snapshot of the database when it starts to the restore
will be constistent with the start time of pg_dump. Good question.

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026