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From:Heikki Tuuri Date:December 29 2003 5:44pm
Subject:Re: MySQL 5.0.0 has been released
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Hi!

It is NOT safe to upgrade to 5.0 and then downgrade to 4.0 again.

http://www.innodb.com/ibman.php
"
IMPORTANT NOTE: if you upgrade to InnoDB-4.1.1, you cannot downgrade any
more! That is because earlier versions of InnoDB are not aware of multiple
tablespaces.
"

InnoDB-5.0.0 is essentially the same as InnoDB-4.1.1.

Best regards,

Heikki Tuuri
Innobase Oy
http://www.innodb.com
Foreign keys, transactions, and row level locking for MySQL
InnoDB Hot Backup - a hot backup tool for InnoDB which also backs up MyISAM
tables

Order MySQL technical support from https://order.mysql.com/

----- Original Message ----- 
From: "Sergei Golubchik" <serg@stripped>
Newsgroups: mailing.database.myodbc
Sent: Monday, December 29, 2003 5:13 PM
Subject: Re: MySQL 5.0.0 has been released


> Hi!
>
> On Dec 29, Thomas Spahni wrote:
> > Hi,
> >
> > is there any change in data format for MySQL 5.0.0? Is it safe (for a
user
> > of stable 4.0.17) to test 5.0.0 on existing data and then go back to
> > 4.0.17 for production?
>
> As far as I know it should be safe.
> But, of course, a backup is always recommended :)
>
> Regards,
> Sergei
>
> -- 
>    __  ___     ___ ____  __
>   /  |/  /_ __/ __/ __ \/ /   Sergei Golubchik <serg@stripped>
>  / /|_/ / // /\ \/ /_/ / /__  MySQL AB, Senior Software Developer
> /_/  /_/\_, /___/\___\_\___/  Osnabrueck, Germany
>        <___/  www.mysql.com
>
> -- 
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Thread
help with connect error(Verle Harrison)13 Mar
  • help with connect errorsinisa14 Mar
  • help with connect errorMichael Widenius15 Mar
  • Re: MySQL 5.0.0 has been releasedadburne24 Dec
  • Re: MySQL 5.0.0 has been releasedThomas Spahni29 Dec
    • Re: MySQL 5.0.0 has been releasedMikhail Entaltsev29 Dec
    • Re: MySQL 5.0.0 has been releasedSergei Golubchik29 Dec
Re: MySQL 5.0.0 has been releasedHeikki Tuuri29 Dec