From: A.Bhuvaneswaran <bhuvan@symonds.net>
To: mohan@physics.gmu.edu
Cc: pgsql-sql@postgresql.org
Subject: Re: migration between databases and versions
Date: Thu, 18 Dec 2003 15:10:19 +0530
Message-ID: <1071740418.1545.24.camel@Bhuvan.bksys.co.in> (raw)
In-Reply-To: <62763.138.88.163.115.1071687497.squirrel@physics.gmu.edu>
References: <62763.138.88.163.115.1071687497.squirrel@physics.gmu.edu>
> I would like to upgrade it to the newest version of postgres.
> 1) Is there a version for redhat 7.3.
Yes. You can run postgresql 7.2.x, 7.3.x & 7.4 on redhat 7.3.
> 2) How stable is postgres 7.4 ?
7.4 is stable. If i am in your position, i would rather wait for 7.4.3
or 7.4.4 for that matter.
> Eg: Old database with data
> has a Table named 'person' with fields A,B
> New Database to be put under prodcution
> also has an Table named 'person' with field A, B,C
If you are *very* sure that,
1) Columns are added, but not deleted
2) Tables are added, but not deleted
3) Tables are not renamed
then, you can follow the below steps to address your need:
1) IMPORTANT: Dump production database (schema & data). It is for safety
reason.
2) Dump production database (data only, using -a & -D option). Refer the
man page for the significance of -a & -D option.
3) Dump development database (schema only)
4) Restore development database (schema only)
5) Restore the dump which is taken in step 2 (data only)
Hope it addresses your need.
regards,
bhuvaneswaran
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To: pgsql-sql@postgresql.org
Cc: bhuvan@symonds.net, mohan@physics.gmu.edu
Subject: Re: migration between databases and versions
In-Reply-To: <1071740418.1545.24.camel@Bhuvan.bksys.co.in>
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