Out of interest, how does pg_dump manage to do a snapshot of a
database at an instant in time?
My mental picture of pg_dump was just a series of queries dumping out
the tables...
--- Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Steve Clark <sclark@netwolves.com> writes:
> > does pg_dumpall make consistent backups if the database is being
> used
> > concurrently?
> > Even though the man page doesn't say it does.
>
> That's intentional, because it doesn't. What you get is a pg_dump
> snapshot of each database in sequence; those snapshots don't all
> correspond to the same time instant. There isn't any good way to
> guarantee time coherence of dumps across two databases.
>
> regards, tom lane
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 2: Don't 'kill -9' the postmaster
>
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