Re: [GENERAL] migrating data from 8.4 to 8.3

2010-02-11 Thread Thomas Kellerer

A. Kretschmer, 11.02.2010 09:42:

In response to Thomas Kellerer :

Marc Lustig, 08.02.2010 11:36:

Hi, can we safely put the data from /var/lib/postgresql/8.4/main/ of
server x to /var/lib/postgresql/8.3/main/ of server y, considering
that the new target machine is running 8.3 whereas the old one ran
8.4 ?


No, a dump&  restore is required (as stated in the release notes)

You can also try pg_migrator. It was introduced with 8.4 and will upgrade
the data "in-place" (i.e. without a dump and restore)


I don't believe that pg_migrator can do a downgrade ...


Ooops!

I read it the wrong way round (I thought the OP wanted to migrate from 8.3 to 
8.4...)

Regards
Thomas




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Re: [GENERAL] migrating data from 8.4 to 8.3

2010-02-11 Thread A. Kretschmer
In response to Thomas Kellerer :
> Marc Lustig, 08.02.2010 11:36:
> >Hi, can we safely put the data from /var/lib/postgresql/8.4/main/ of
> >server x to /var/lib/postgresql/8.3/main/ of server y, considering
> >that the new target machine is running 8.3 whereas the old one ran
> >8.4 ?
> 
> No, a dump & restore is required (as stated in the release notes)
> 
> You can also try pg_migrator. It was introduced with 8.4 and will upgrade 
> the data "in-place" (i.e. without a dump and restore)

I don't believe that pg_migrator can do a downgrade ...

Regards, Andreas
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Re: [GENERAL] migrating data from 8.4 to 8.3

2010-02-11 Thread A. Kretschmer
In response to Marc Lustig :
> Hi,
> can we safely put the data from /var/lib/postgresql/8.4/main/ of server x to 
> /var/lib/postgresql/8.3/main/ of server y, considering that the new target 
> machine is running 8.3 whereas the old one ran 8.4 ?

No!

Make a regular Backup und restore that Backup. Consider, 8.4 contains
features that not in 8.3, maybe you are not able to do this.

Regards, Andreas
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Re: [GENERAL] migrating data from 8.4 to 8.3

2010-02-11 Thread Thomas Kellerer

Marc Lustig, 08.02.2010 11:36:

Hi, can we safely put the data from /var/lib/postgresql/8.4/main/ of
server x to /var/lib/postgresql/8.3/main/ of server y, considering
that the new target machine is running 8.3 whereas the old one ran
8.4 ?


No, a dump & restore is required (as stated in the release notes)

You can also try pg_migrator. It was introduced with 8.4 and will upgrade the data 
"in-place" (i.e. without a dump and restore)

Regards
Thomas


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[GENERAL] migrating data from 8.4 to 8.3

2010-02-11 Thread Marc Lustig
Hi,
can we safely put the data from /var/lib/postgresql/8.4/main/ of server x to 
/var/lib/postgresql/8.3/main/ of server y, considering that the new target 
machine is running 8.3 whereas the old one ran 8.4 ?

Rgards
Marc
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[GENERAL] migrating data from 8.4 to 8.3

2010-02-11 Thread Marc Lustig
Hi,
can we safely put the data from /var/lib/postgresql/8.4/main/ of server x to 
/var/lib/postgresql/8.3/main/ of server y, considering that the new target 
machine is running 8.3 whereas the old one ran 8.4 ?

Rgards
Marc
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