From: | Shankar K <shan0075(at)yahoo(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: [ADMIN] Rebuild indexes |
Date: | 2003-07-29 03:00:39 |
Message-ID: | 20030729030039.15806.qmail@web21106.mail.yahoo.com |
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Thread: | |
Lists: | pgsql-admin pgsql-performance |
thanks tom. i wasn't sure about create index taking
exclusive locks on tables too. so i could as well
reindex than doing the whole _swap mess during
off-peak hrs.
--- Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Shankar K <shan0075(at)yahoo(dot)com> writes:
> > ... so i then decided to do reindex online, but
> > that makes exclusive lock on table which would
> prevent
> > writing on to tables.
>
> So does CREATE INDEX, so it's not clear what you're
> buying with
> all these pushups.
>
> > 2. analyze table to update stats, so that the
> table
> > knows about new indexes.
>
> You do not need to ANALYZE to get the system to
> notice new indexes.
>
> > 4. i wish i had a rename index command to rename
> _swap
> > to its original index name.
>
> You can rename indexes as if they were tables.
>
> regards, tom lane
>
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