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