Re: Patch to warn about oid/xid wraparound

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Lamar Owen <lamar(dot)owen(at)wgcr(dot)org>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Patch to warn about oid/xid wraparound
Date: 2001-06-13 19:56:06
Message-ID: 200106131956.f5DJu7a13924@candle.pha.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers pgsql-patches

> On Tuesday 12 June 2001 19:33, Bruce Momjian wrote:
> > Here is a patch that will warn you during VACUUM when you are within 75%
> > of oid/xid wraparound.
>
> > I will apply it if 7.2 has no solution to the wraparounds.
>
> Is this something a potential 7.1.3 release might need? I consider this a
> bug workaround, actually. Or even a feature patch against 7.1.x that people
> can download if they think they need it?
>
> As PostgreSQL gets used in bigger and bigger database installations, the
> wraparound problems become more and more likely. And it's likely to be at
> least six months before 7.2beta, if the track record stays the same as it has
> the last three releases.

Here is an new patch that updates the percentage display when it is run,
rather than just displaying 75%. I had to do the computation using
floats to prevent overflow.

Again, I will put this in 7.2 if we have no solution for rollover.

--
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

Attachment Content-Type Size
unknown_filename text/plain 2.0 KB

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Vince Vielhaber 2001-06-13 20:20:09 Re: create user problem
Previous Message Mike Cianflone 2001-06-13 19:16:43 RE: vacuum

Browse pgsql-patches by date

  From Date Subject
Next Message Peter Eisentraut 2001-06-13 20:35:26 Re: Patch to warn about oid/xid wraparound
Previous Message Tom Lane 2001-06-13 17:22:01 Re: Re: [PATCHES] Fw: Isn't pg_statistic a security hole - Solution Proposal