| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Dean Gibson (DB Administrator)" <dba-sql(at)ultimeth(dot)net> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: VACUUM and transaction ID wraparound |
| Date: | 2003-05-17 04:40:11 |
| Message-ID: | 2297.1053146411@sss.pgh.pa.us |
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| Lists: | pgsql-general |
"Dean Gibson (DB Administrator)" <dba-sql(at)ultimeth(dot)net> writes:
> The documentation says (Admin Guide, 8.2.3), "... each database-wide
> VACUUM automatically delivers a warning" if individual tables need
> VACUUMing to prevent transaction ID wraparound.
Not individual tables, but whole databases (databases other than the one
you just vacuumed, obviously).
> Is there something here I don't understand?
The warning is intended to alert you in case you have entire databases
you've forgotten to vacuum for a good long while. It's a compromise
between being too much in-your-face and letting you go down to
disaster...
regards, tom lane
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