Re: Database restoration performance issue on PostgreSQL 7.4.7

Lists: pgsql-general
From: Leon Pu <leon_xf_pu(at)yahoo(dot)com(dot)cn>
To: pgsql-general(at)postgresql(dot)org
Subject: Database restoration performance issue on PostgreSQL 7.4.7
Date: 2006-04-04 04:30:39
Message-ID: 20060404043039.41125.qmail@web15706.mail.cnb.yahoo.com
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Lists: pgsql-general

Hi all,

the database restoration on my PosgreSQL 7.4.7 Linux installation is
terribly poor. It takes more than one and half hour to restore a 61M
restored database.

Here are my commands to backup and restore.

- backup: pg_dump -d $DB_NAME > db.bak
- restore: psql -d $DB_NAME < db.bak

Is the problem related to my backup and restore command, or it's the
problem of my system, or PostgreSQL installation?

Best regards,
Leon

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From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Leon Pu <leon_xf_pu(at)yahoo(dot)com(dot)cn>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Database restoration performance issue on PostgreSQL 7.4.7
Date: 2006-04-04 04:50:03
Message-ID: 12820.1144126203@sss.pgh.pa.us
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Lists: pgsql-general

Leon Pu <leon_xf_pu(at)yahoo(dot)com(dot)cn> writes:
> the database restoration on my PosgreSQL 7.4.7 Linux installation is
> terribly poor. It takes more than one and half hour to restore a 61M
> restored database.

> Here are my commands to backup and restore.

> - backup: pg_dump -d $DB_NAME > db.bak
> - restore: psql -d $DB_NAME < db.bak

Try dropping the -d switch to pg_dump.

regards, tom lane


From: Leon Pu <leon_xf_pu(at)yahoo(dot)com(dot)cn>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Database restoration performance issue on PostgreSQL 7.4.7
Date: 2006-04-04 05:59:47
Message-ID: 20060404055947.19201.qmail@web15709.mail.cnb.yahoo.com
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Lists: pgsql-general

--- Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> Leon Pu <leon_xf_pu(at)yahoo(dot)com(dot)cn> writes:
> > the database restoration on my PosgreSQL 7.4.7 Linux installation
> is
> > terribly poor. It takes more than one and half hour to restore a
> 61M
> > restored database.
>
> > Here are my commands to backup and restore.
>
> > - backup: pg_dump -d $DB_NAME > db.bak
> > - restore: psql -d $DB_NAME < db.bak
>
> Try dropping the -d switch to pg_dump.

It works.

Thanks a lot.

Best regards,
Leon

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